Phân tích đa thức thành nhân tử
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Hằng Hà
Used 14+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Chọn câu đúng
(A + B)3 = A3 + 3A2B + 3AB2 + B3
(A - B)3 = A3 - 3A2B - 3AB2 - B3
(A + B)3 = A3 + B3
(A - B)3 = A3 - B3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết biểu thức x3 + 12x2 + 48x + 64 dưới dạng lập phương của một tổng
(x + 4)3
(x – 4)3
(x – 8)3
(x + 8)3
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết biểu thức 8x3 + 36x2 + 54x + 27 dưới dạng lập phương của một tổng
(2x + 9)3
(2x + 3)3
(4x + 3)3
(4x + 9)3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết biểu thức x3 – 6x2 + 12x – 8 dưới dạng lập phương của một hiệu
(x + 4)3
(x – 4)3
(x + 2)3
(x - 2)3
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Viết biểu thức (x – 3y)(x2 + 3xy + 9y2) dưới dạng hiệu hai lập phương
x3 + (3y)3
x3 + (9y)3
x3 – (3y)3
x3 – (9y)3
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Tìm x biết x3 + 3x2 + 3x + 1 = 0
x = -2
x = 1
x = -1
x = 0
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Cho biểu thức A = x3 – 3x2 + 3x. Tính giá trị của A khi x = 1001
A = 10003
A = 1001
A = 10003 – 1
A = 10003 + 1
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