Toan 9: Lien he giua phep chia va phep khai phuong (tuan 4)

Toan 9: Lien he giua phep chia va phep khai phuong (tuan 4)

9th Grade

20 Qs

quiz-placeholder

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Toan 9: Lien he giua phep chia va phep khai phuong (tuan 4)

Toan 9: Lien he giua phep chia va phep khai phuong (tuan 4)

Assessment

Quiz

Mathematics

9th Grade

Medium

Created by

Cai Long

Used 13+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Với a>0 thì 2a2b4a2=2a^2\sqrt{\frac{b^4}{a^2}}=  

 2b22b^2  

 2ab22ab^2  

 2ab22\left|a\right|b^2  

 ±2ab2\pm2ab^2  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Với a>0 thì 75a3a=\frac{\sqrt{75a}}{\sqrt{3a}}=  

-25

25

-5

5

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 M=(x+4)(x5)M=\sqrt{\left(x+4\right)\left(x-5\right)}  

Điều kiện của x để biểu thức M có nghĩa là:

 x5x\ge5  

 x4x\le-4  

 4x5-4\le x\le5  

 x5x\ge5  hoặc  x4x\le-4  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 N=15x225x5N=\frac{1}{5}\sqrt{x^2-25}-\sqrt{x-5}  

Điều kiện của x để biểu thức N có nghĩa là:

 x5x\ge5  

 x5x\ge-5  

 x5x\le5  

 x5x\le-5  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 12521002400=\sqrt{\frac{125^2-100^2}{400}}=  

5/4

15/4

21/20

4/5

6.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

 (1227+3):3=\left(\sqrt{12}-\sqrt{27}+\sqrt{3}\right):\sqrt{3}=  

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 1 34×2 27 ×5 49=\sqrt{1\ \frac{3}{4}\times2\ \frac{2}{7\ }\times5\ \frac{4}{9}}=  

14/3

14/9

2/3

4/9

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