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9th Grade

20 Qs

quiz-placeholder

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Assessment

Quiz

Specialty

9th Grade

Practice Problem

Hard

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Căn bậc hai số học của 9 là:

-3

3

81

-81

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Biểu thức √16 bằng

4 và -4

4

-8

8

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

So sánh 9 và √79 . Ta có kết luận

9<√79

9=√79

9>√79

Không so sánh được

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Căn bậc ba của -125 là:

5

-5

±5

-25

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Trong các khẳng định dưới đây, khẳng định nào đúng?

Căn bậc hai số học của 1/25 là ±1/5

Căn bậc hai của 0,04 là 0,01

Nếu a>1 thì √a >1

Nếu a>0 thì a=√a

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Khẳng định nào sau đây là sai

√6>4

2√3>3√3

2√6>4

4√2<5√3

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

0

-10

50

10

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