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		<h1>ĐỀ THI KHẢO SÁT CHẤT LƯỢNG - TOÁN LỚP 7</h1>
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			<div style="text-align: center;"><span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:14.0pt">ĐỀ THI KHẢO SÁT CHẤT LƯỢNG</span></b></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><span style="font-size:14.0pt">Môn Toán 7</span></b></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">Thời gian làm bài 90 phút</span></span></span></div>
<br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span style="font-size:14.0pt">I.Trắc nghiệm (2 điểm):</span></i></b><span style="font-size:14.0pt"> <i>Hãy khoanh tròn vào chữ cái đứng trước câu trả lời đúng</i></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span style="font-size:14.0pt">Câu 1.</span></i></b><span style="font-size:14.0pt"> Cách viết nào sau đây là đúng ?</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. – 7 <span style="position:relative"><span style="top:3.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image002.gif" style="width:29px; height:19px" /></span></span>&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. – 7 <span style="position:relative"><span style="top:3.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image004.gif" style="width:28px; height:19px" /></span></span>&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. – 7 <span style="position:relative"><span style="top:5.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image006.gif" style="width:29px; height:21px" /></span></span>&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. – 7 <span style="position:relative"><span style="top:5.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image008.gif" style="width:29px; height:21px" /></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span style="font-size:14.0pt">Câu 2.</span></i></b><span style="font-size:14.0pt"> Nếu <span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" style="width:41px; height:27px" /></span></span>&nbsp;thì x bằng: </span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. 5 hoặc – 5&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. 5 ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. – 5 ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. Một đáp án khác</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">&nbsp;<b><i>Câu 3.</i></b> Kết quả của phép chia <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image012.gif" style="width:104px; height:49px" /></span></span>là:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" style="width:48px; height:49px" /></span></span>&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image016.gif" style="width:47px; height:49px" /></span></span>&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image018.gif" style="width:36px; height:49px" /></span></span>&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image020.gif" style="width:51px; height:49px" /></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span style="font-size:14.0pt">Câu 4.</span></i></b><span style="font-size:14.0pt"> Chọn câu trả lời đúng: </span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="NL" style="font-size:14.0pt">Tìm x, biết: </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image022.gif" style="width:63px; height:44px" /></span></span></span><span lang="NL" style="font-size:14.0pt">.</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. x = 0,8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. x = 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C.&nbsp; x = - 4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D.&nbsp; x = </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:2.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image024.gif" style="width:21px; height:17px" /></span></span></span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">Câu 5.</span></i></b><span lang="NL" style="font-size:14.0pt"> Chọn câu trả lời đúng: </span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp; Làm tròn số 89,4647 đến chữ số thập phân thứ ba là:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. 89,465&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. 89,46&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. 89,5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. 89,464</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">Câu 6.</span></i></b><span lang="NL" style="font-size:14.0pt"> Số ( 5<sup>6</sup>) <sup>2</sup> bằng:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. 5<sup>12</sup> ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. 5<sup>8</sup> ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. 5<sup>4</sup> ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. 5<sup>3</sup></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">Câu 7.</span></i></b><span lang="NL" style="font-size:14.0pt"> Từ 2.12 = 3.8 có thể suy ra tỉ lệ thức nào?</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image026.gif" style="width:47px; height:41px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;B. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image028.gif" style="width:48px; height:41px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image030.gif" style="width:47px; height:41px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image032.gif" style="width:48px; height:41px" /></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">Câu 8.</span></i></b><span lang="NL" style="font-size:14.0pt"> Cách viết nào sau đây là đúng?</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="NL" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A. - </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image034.gif" style="width:68px; height:27px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; B. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image036.gif" style="width:76px; height:27px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; C. - </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image038.gif" style="width:76px; height:27px" /></span></span></span><span lang="NL" style="font-size:14.0pt">&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; D. </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image038.gif" style="width:76px; height:27px" /></span></span></span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></span><br />
<br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">II. Tự luận(8 điểm):&nbsp; </span></i></b></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="NL" style="font-size:14.0pt">Câu 9(2 điểm).</span></i></b><span lang="NL" style="font-size:14.0pt"> Thực hiện phép tính( Tính nhanh nếu có thể):&nbsp; </span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="PT-BR" style="font-size:14.0pt">a) </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image041.gif" style="width:56px; height:41px" /></span></span></span><span lang="PT-BR" style="font-size:14.0pt">&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image043.gif" style="width:80px; height:45px" /></span></span></span><span lang="PT-BR" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c)&nbsp; </span><span style="font-size:14.0pt"><span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image045.gif" style="width:131px; height:41px" /></span></span></span>&nbsp;</span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="PT-BR" style="font-size:14.0pt">Câu 10(2 điểm).</span></i></b> <span style="font-size:14.0pt">Tìm x, biết:</span></span></span>

<ol style="list-style-type:lower-alpha">
	<li style="margin-left:31px"><span style="font-size:12pt"><span style="tab-stops:list 53.25pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span style="font-size:14.0pt">2x – 17 = 3 ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) <span style="position:relative"><span style="top:14.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image047.gif" style="width:117px; height:45px" /></span></span>&nbsp;&nbsp;;&nbsp;&nbsp;&nbsp;&nbsp; c) <span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image049.gif" style="width:101px; height:27px" /></span></span>&nbsp;&nbsp;&nbsp;</span></span></span></span></li>
</ol>
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span style="font-size:14.0pt">Câu 11(1,5 điểm).</span></i></b><span style="font-size:14.0pt"> Tìm x, y, z biết:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="ES-VE" style="font-size:14.0pt">a) <span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image051.gif" style="width:44px; height:41px" /></span></span>&nbsp;và xy = 40</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) <span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image053.gif" style="width:44px; height:41px" /></span></span>&nbsp;; <span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image055.gif" style="width:43px; height:41px" /></span></span>&nbsp;và 2x – 3y + z = 6</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="ES-VE" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) <span style="position:relative"><span style="top:12.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image057.gif" style="width:69px; height:41px" /></span></span>&nbsp;và 2x<sup>2</sup> + 2y<sup>2</sup> – 3z<sup>2</sup> = - 100</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><b><i><span lang="ES-VE" style="font-size:14.0pt">Câu 12(2 điểm).</span></i></b><span lang="ES-VE" style="font-size:14.0pt"> Cho hình vẽ sau:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">     
<table width="100%">
	<tbody>
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			<td>
			<div>A</div>
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			<td>
			<div>B</div>
			</td>
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			<div><span style="font-size:10.0pt">2</span></div>
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			<div><span style="font-size:10.0pt">4</span></div>
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			<div><span style="font-size:10.0pt">1</span></div>
			</td>
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			<td>
			<div><span style="font-size:10.0pt">3</span></div>
			</td>
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<table width="100%">
	<tbody>
		<tr>
			<td>
			<div><span style="font-size:10.0pt">4</span></div>
			</td>
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	<tbody>
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			<td>
			<div><span style="font-size:10.0pt">1</span></div>
			</td>
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		<tr>
			<td>
			<div><span style="font-size:10.0pt">2</span></div>
			</td>
		</tr>
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		<tr>
			<td>
			<div><span style="font-size:10.0pt">3</span></div>
			</td>
		</tr>
	</tbody>
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<table width="100%">
	<tbody>
		<tr>
			<td>
			<div>c</div>
			</td>
		</tr>
	</tbody>
</table>
<table width="100%">
	<tbody>
		<tr>
			<td>
			<div>a</div>
			</td>
		</tr>
	</tbody>
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<table width="100%">
	<tbody>
		<tr>
			<td>
			<div>&nbsp;b&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
			</td>
		</tr>
	</tbody>
</table>
 <span style="position:relative"><span style="z-index:251660288"><span style="left:285px; width:227px"><span style="position:absolute"><span style="top:-11px"><span style="height:140px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image058.gif" style="width:227px; height:140px" /></span></span></span></span></span></span><span lang="PT-BR" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Biết a // b và </span><span lang="FR" style="font-size:14.0pt"><span style="position:relative"><span style="top:3.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image060.gif" style="width:59px; height:24px" /></span></span></span><span lang="PT-BR" style="font-size:14.0pt">. </span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="PT-BR" style="font-size:14.0pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Tính </span><span lang="FR" style="font-size:14.0pt"><span style="position:relative"><span style="top:6.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image062.gif" style="width:84px; height:28px" /></span></span></span><span lang="PT-BR" style="font-size:14.0pt">&nbsp;?</span></span></span><br />
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<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">  <span style="position:relative"><span style="z-index:251665408"><span style="position:absolute; width:20px"><span style="left:89px"><span style="top:-19886px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image063.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251664384"><span style="position:absolute; width:20px"><span style="left:145px"><span style="top:-1718px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251663360"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-1744px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image065.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251661312"><span style="position:absolute; width:20px"><span style="left:137px"><span style="top:-1512px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image066.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251662336"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-4087px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251659264"><span style="position:absolute; width:20px"><span style="left:89px"><span style="top:-19886px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image063.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251658240"><span style="position:absolute; width:20px"><span style="left:145px"><span style="top:-1718px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251657216"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-1744px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image065.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251655168"><span style="position:absolute; width:20px"><span style="left:137px"><span style="top:-1512px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image066.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251656192"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-4087px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251654144"><span style="position:absolute; width:20px"><span style="left:89px"><span style="top:-19886px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image063.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251653120"><span style="position:absolute; width:20px"><span style="left:145px"><span style="top:-1718px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251652096"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-1744px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image065.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251650048"><span style="position:absolute; width:20px"><span style="left:137px"><span style="top:-1512px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image066.gif" style="width:20px; height:10px" /></span></span></span></span></span></span>  <span style="position:relative"><span style="z-index:251651072"><span style="position:absolute; width:20px"><span style="left:15px"><span style="top:-4087px"><span style="height:10px"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image064.gif" style="width:20px; height:10px" /></span></span></span></span></span></span><b><i><span lang="PT-BR" style="font-size:14.0pt">Câu 13(0,5 điểm).</span></i></b><span lang="PT-BR" style="font-size:14.0pt"> Tìm giá trị nhỏ nhất của biểu thức:</span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span lang="FR" style="font-size:14.0pt">C = <span style="position:relative"><span style="top:7.0pt"><img alt="" src="https://thcsthanhthuy.xatamhung.edu.vn/file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image068.gif" style="width:196px; height:27px" /></span></span></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif"><span lang="FR" style="font-size:14.0pt"><span style="font-family:&#039;.VnTime&#039;,&#039;sans-serif&#039;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ------------------------------------------------------------------------</span></span></span></span><br />
<span style="font-size:12pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span></span><br />
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				<strong>Nguồn tin:</strong>
				Giáo viên: Nguyễn Thị Liên
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