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căn bậc hai

Authored by thuy thi

Mathematics

9th Grade

Used 27+ times

căn bậc hai
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13 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kết quả phép khai phương 25\sqrt{25}   là

5

25

10

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Kết quả phép tính 49+16\sqrt{49}+\sqrt{16}  là

7 + 4

11

7 + 8

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phát biểu sau đúng hay sai: 6 <  41\sqrt{41}  


Sai

Đúng

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x5\sqrt{x-5}  có nghĩa khi

 x>5x>5  

 x5x\ge5  

 x5x\ne5  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 3x3\frac{3}{\sqrt{x-3}}  xác định khi

 x>3x>3  

 x3x\ge3  

 x3x\ne3  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rút gọn (x1)2x\sqrt{\left(x-1\right)^2}-x  với  x1x\ge1  là

1 - 2x

2x-1

-1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Rút gọn 423+1\sqrt{4-2\sqrt{3}}+1  là


 232-\sqrt{3}  

 31+1\sqrt{3}-1+1  

 3\sqrt{3}  

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