
Hằng Đẳng Thức Cơ Bản

Quiz
•
Mathematics
•
8th Grade
•
Hard
Đinh Hạnh
FREE Resource
10 questions
Show all answers
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
Tính giá trị của (x + 3)² khi x = 2.
30
15
20
25
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a - b)² = ?
a² - 2ab + b²
(a + b)²
a² - b²
a² + 2ab + b²
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Áp dụng hằng đẳng thức (x + y)(x - y) để tính giá trị khi x = 5 và y = 3.
12
16
20
8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: a² - b² = ?
(a - b)(a + b)
(a + b)²
(a - b)²
a² + b²
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tính giá trị của (2x + 1)(2x - 1) khi x = 2.
5
20
10
15
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hằng đẳng thức nào sau đây là đúng: (a + b + c)² = ?
(a + b)² + c²
a² + b² + 2ac + 2bc
a² + b² + c² + 2ab + 2ac
a² + b² + c² + 2ab + 2ac + 2bc
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