Hằng đẳng thức trong Toán học

Quiz
•
Mathematics
•
8th Grade
•
Medium
Võ Ba
Used 1+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a + b)² = ?
a² + 2ab + b²
(a + b)(a - b)
a² + b²
a² - 2ab + b²
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Áp dụng hằng đẳng thức, tính giá trị của (3 + 4)².
25
64
36
49
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhận diện hằng đẳng thức: (a - b)² = ?
a² - 2ab + b²
(a + b)²
a² + 2ab + b²
a² - b²
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính giá trị biểu thức: (5 - 2)² + 4(5 - 2) + 4.
15
30
25
20
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Áp dụng hằng đẳng thức để rút gọn biểu thức: (x + 3)² - (x - 3)² = ?
12x
(x + 3)(x - 3)
6x
x² - 9
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