
Hằng Đẳng Thức Đáng Nhớ
Authored by van vo
Mathematics
8th Grade
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a + b)² = ?
(a + b)(a - b)
a² + 2ab + b²
a² + b²
a² - 2ab + b²
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a - b)² = ?
(a + b)²
a² - 2ab + b²
a² - b²
a² + 2ab + b²
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: a² - b² = ?
a² + b²
(a + b)²
(a - b)²
(a - b)(a + b)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a + b)(a - b) = ?
a^2 + b^2
(a + b)^2
(a - b)^2
a^2 - b^2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (x + y)² = ?
2x + 2y
x² + y²
x² + 2y²
x² + 2xy + y²
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (x - y)² = ?
x² - y²
x² - 2xy + y²
(x + y)²
x² + 2xy + y²
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a + b + c)² = ?
a² + b² + c² + ab + ac + bc
a² + b² + c² + 2ab + 2ac + 2bc
(a + b + c)(a + b + c)
a² + b² + c² + 3ab
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