7 hằng đẳng thức
Authored by 02_Phan Bảo
Physics, English, Mathematics
7th Grade
Used 4+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Đúng
Sai
x
x
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(a+b)(a-b)
(a-b)(b-a)
[a+(-b)][a-b]
ab-ab(a+b)
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Hđt số 1
Hđt số 2
Hđt số 3
Hđt số 7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nếu a và b cùng dấu thì ...
ab=0
ab>0
ab<0
ab=0 hoặc ab<0
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