Toan 9 Hang dang thuc can bac hai va he thuc luong

Toan 9 Hang dang thuc can bac hai va he thuc luong

9th Grade

25 Qs

quiz-placeholder

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Toan 9 Hang dang thuc can bac hai va he thuc luong

Toan 9 Hang dang thuc can bac hai va he thuc luong

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Medium

Created by

Cai Long

Used 17+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 5 pts

Kết quả phép tính (1213)2=-\sqrt{\left(\frac{-12}{13}\right)^2}=  

12/13

-12/13

144/169

-13/12

2.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

Với  a1a\le1  thì  a4(a1)2=\sqrt{a^4\left(a-1\right)^2}=  

 a2(1a)a^2\left(1-a\right)  

 a2 (a1)a^{2\ }\left(a-1\right)  

 a(a1)a\left(a-1\right)  

 a(1a)a\left(1-a\right)  

3.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

 5 (2)2=-5\ \sqrt{\left(-2\right)^2}=  

-10

10

20

-20

4.

FILL IN THE BLANK QUESTION

5 mins • 5 pts

 (23)2+(13)2=\sqrt{\left(2-\sqrt{3}\right)^2}+\sqrt{\left(1-\sqrt{3}\right)^2}=  
Viết kết quả là số tự nhiên

5.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

Giá trị của biểu thức  A=6+242bA=\sqrt{6+2\sqrt{4-2b}}  tại  b=3b=\sqrt{3}  . Khi đó  A=A=  

 31\sqrt{3}-1  

 3+1\sqrt{3}+1  

 131-\sqrt{3}  

 232\sqrt{3}  

6.

MULTIPLE CHOICE QUESTION

3 mins • 5 pts

 6. (136)26.\ \sqrt{\left(\frac{-1}{36}\right)^2}  

-1/6

1/6

1/36

-1/36

7.

MULTIPLE CHOICE QUESTION

5 mins • 5 pts

 8278+27=\sqrt{8-2\sqrt{7}}-\sqrt{8+2\sqrt{7}}=  

-2

2

 27-2\sqrt{7}  

 272\sqrt{7}  

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