Căn bậc hai
Interactive Video
•
Mathematics
•
9th Grade
•
Practice Problem
•
Hard
Dinh Bùi Thị
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Định nghĩa của căn thức bậc hai là gì?
Là một biểu thức có dạng √A, trong đó A là một biểu thức đại số.
Là một số không âm x sao cho x^2 = A.
Là một biểu thức có dạng A^2.
Là một biểu thức chỉ chứa số.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Điều kiện để căn thức bậc hai √A xác định là gì?
A < 0
A = 0
A > 0
A ≥ 0
3.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cho căn thức P = √(2x + 1). Tính giá trị của P khi x = 4.
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rút gọn biểu thức √((1 - x)²) với x < 0.
1 - x
x - 1
|1 - x|
-(1 - x)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rút gọn biểu thức √(1 - 2x + x²) với x > 2.
1 - x
x - 1
|1 - x|
-(x - 1)
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