Căn bậc hai

Căn bậc hai

9th Grade

12 Qs

quiz-placeholder

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Căn bậc hai

Căn bậc hai

Assessment

Quiz

Mathematics

9th Grade

Medium

Created by

Hà Anh

Used 14+ times

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12 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Media Image

Hãy chọn những khẳng định đúng.

A

B

C

D

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Hãy chọn khẳng định sai.

A

B

C

D

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Chọn câu trả lời đúng.

AB=ABB vi AB0, B0\sqrt{\frac{A}{B}}=\frac{\sqrt{AB}}{B}\ với\ AB\ge0,\ B\ne0

AB=ABB vi AB>0\sqrt{\frac{A}{B}}=\frac{\sqrt{AB}}{B}\ với\ AB>0

AB=ABB vi AB0, B0\sqrt{\frac{A}{B}}=\frac{\sqrt{AB}}{\left|B\right|}\ với\ AB\ge0,\ B\ne0

AB=ABB vi AB>0\sqrt{\frac{A}{B}}=\frac{\sqrt{AB}}{\left|B\right|}\ với\ AB>0

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Khẳng định nào sau đây sai?

3x\sqrt{3x} xác định x0\Longleftrightarrow\ x\ge0

9x\sqrt{-9x} xác định x0\Longleftrightarrow\ x\le0

x53\sqrt{\frac{x-5}{3}} xác định x5\Longleftrightarrow\ x\ge5

4x9\sqrt{\frac{-4}{x-9}} xác định x>7\Longleftrightarrow\ x>7

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Điều kiện xác định của  a2+1a3\sqrt{\frac{a^2+1}{a^3}}   là?

 a0a\ge0  

 a0a\le0  

 a>0a>0  

 a>1a>-1  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A

B

C

D

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

A

B

C

D

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