ÔN TẬP 7 HẰNG ĐẲNG THỨC ĐÁNG NHỚ
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•10 Qs
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ÔN TẬP 7 HẰNG ĐẲNG THỨC ĐÁNG NHỚ
Quiz
•
Mathematics
•
8th - 9th Grade
•
Practice Problem
•
Medium
THẦY THI
Used 26+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kết quả rút gọn
(3−2x)(3+2x)
là bao nhiêu
9 - 4x2
9−12x+4x2
9 + 4x2
9+12x+4x2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Với A,B là hai biểu thức bất kì, (A+B)2 =
A + B2
A2 + B2
A2+ AB + B2
A2 + 2AB + B2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
x2 + 4xy + 16y2 = (x + 4y)2 đúng hay sai
ĐÚNG
SAI
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bình phương của một tổng là
(a - b)2
(a + b)2
a2 + b2
a2 - b2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Viết biểu thức sau dưới dạng bình phương của một tổng hoặc một hiệu:
x2 − 4x + 4
(x - 4)2
(x + 4)2
(x - 2)2
(x + 2)2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức số 2 có dạng là:
a2 −2ab+b2 =
a2 −b2
a2 + b2
(a + b)2
(a − b)2
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết thành bình phương của một tổng 16y2+32yz+16z2=....
(4y + 4z)2
(16y + 16z)2
(4y + 16z)2
(16y + 4z)2
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