KIỂM TRA CHƯƠNG 1 ĐẠI SỐ 9

KIỂM TRA CHƯƠNG 1 ĐẠI SỐ 9

9th Grade

12 Qs

quiz-placeholder

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KIỂM TRA CHƯƠNG 1 ĐẠI SỐ 9

KIỂM TRA CHƯƠNG 1 ĐẠI SỐ 9

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Trung Huynh

Used 26+ times

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 32x\sqrt{3-2x}  

xác định khi và chỉ khi

 x>32x>\frac{3}{2}  

 x<32x<\frac{3}{2}  

 x32x\ge\frac{3}{2}  

 x32x\le\frac{3}{2}  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (x1)2\sqrt{\left(x-1\right)^2}  bằng:

 x1x-1  

 1x1-x  

 x1\left|x-1\right|  

 1x\left|1-x\right|  

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Giá trị của biểu thức

 7+575+757+5\frac{\sqrt{7}+\sqrt{5}}{\sqrt{7}-\sqrt{5}}+\frac{\sqrt{7}-\sqrt{5}}{\sqrt{7}+\sqrt{5}}  

1

2

12

 12\sqrt{12}  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 2b2a44b22b^2\sqrt{\frac{a^4}{4b^2}}  

Rút gọn biểu thức trên ta được:

 a22\frac{a^2}{2}  

 a2ba^2b  

 a2b-a^2b  

 a2b2b2\frac{a^2b^2}{b^2}  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 4x20+3x59139x45=4\sqrt{4x-20}+3\sqrt{\frac{x-5}{9}}-\frac{1}{3}\sqrt{9x-45}=4  
Giá trị x thỏa mãn biểu thức trên là:

5

9

6

Tất cả đều sai

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Cho M=6+25M=\sqrt{6+2\sqrt{5}}  và  N=5+13N=\frac{\sqrt{5}+1}{\sqrt{3}} 

So sánh M và N ta được: 

 M=NM=N  

 M<NM<N  

 M>NM>N  

 MNM\ge N  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 (322)2+(3+22)2\sqrt{\left(3-2\sqrt{2}\right)^2}+\sqrt{\left(3+2\sqrt{2}\right)^2}  
Kết quả phép tính trên là:

6

 424\sqrt{2}  

 42-4\sqrt{2}  

-6

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