
Căn bậc hai. Căn bậc ba
Authored by HOANG NGA
Mathematics
9th Grade
Used 17+ times

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20 questions
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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 hai số học của số a không âm là:
Số có bình phương bằng a
-√a
√a
±√a
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-3
3
-81
81
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Căn bậc hai số học của 5^2 -3^2 là:
16
4
-4
±4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Căn bậc ba của -125 là:
5
-5
±5
-25
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