
TOÁN 8CB | CD: ĐA THỨC | CN 13/7/2025
Quiz
•
Mathematics
•
8th Grade
•
Medium
Vinh Sư Phụ
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép tính (3x² - 5x + 1) - (x² - 5x - 3) là:
2x² - 10x - 2
2x² + 4
2x² - 2
3x²
Answer explanation
Bài mẫu:
Kết quả của phép tính (x2 + 3x - 2) - (2x + 5 - x2)
Hướng dẫn
(x2 + 3x - 2) - (2x + 5 - x2)
= x2 + 3x - 2 - 2x - 5 + x2
= 2x2 + x -7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tích của hai đa thức (x - 4)(x + 5) là:
x² + x - 20
x² - x - 20
x² - 20
x² + 9x - 20
Answer explanation
Bài mẫu
Tích của hai đa thức (x - 3)(x - 1) là
Hướng dẫn
(x - 3)(x - 1) = x2 - 3x - x + 3 = x2 - 4x + 3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép chia (12x³ + 8x² - 4x) : (4x) là:
3x² + 2x
3x² + 2x - 1
3x³ + 2x² - x
12x² + 8x - 4
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Tìm số dư của phép chia đa thức (x² - 3x + 7) cho đa thức (x + 2).
Answer explanation
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép cộng (2x² - 4) + (-x² + 3x + 5) là:
x² + 3x + 1
3x² + 3x + 1
x² - x + 1
x² + 3x - 1
Answer explanation
Bài mẫu:
Kết quả của phép tính (x2 + 3x - 2) - (2x + 5 - x2)
Hướng dẫn
(x2 + 3x - 2) - (2x + 5 - x2)
= x2 + 3x - 2 - 2x - 5 + x2
= 2x2 + x -7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép nhân (-2x²)(3x - 5) là:
-6x³ - 10x²
6x³ - 10x²
-6x³ + 10x²
-6x² + 10x²
Answer explanation
Bài mẫu
Tích của hai đa thức (x - 3)(x - 1) là
Hướng dẫn
(x - 3)(x - 1) = x2 - 3x - x + 3 = x2 - 4x + 3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kết quả của phép chia (5x² - 10x + 2) : (5x) là:
x - 2
x - 2 dư 2
x - 2 + 2/5
x - 2 + 2/(5x)
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