Search Header Logo

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

Authored by Cai Long

Mathematics

9th Grade

Used 13+ times

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

AI Actions

Add similar questions

Adjust reading levels

Convert to real-world scenario

Translate activity

More...

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 BLANKS QUESTION

2 mins • 1 pt

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

(a)  

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

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Microsoft

Continue with Microsoft

or continue with

Facebook

Facebook

Apple

Apple

Others

Others

By signing up, you agree to our Terms of Service & Privacy Policy

Already have an account?