
因式分解能力测试
Authored by 芸 卢
Mathematics
8th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
提取公因式:将 6x^2 + 9x 进行因式分解。
3(2x^2 + 3x)
3x(2x + 3)
6(x^2 + 1.5x)
2x(3x + 4)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
平方差公式:因式分解 x^2 - 16。
(x - 8)(x + 2)
(x + 4)(x + 4)
(x - 4)(x - 4)
(x - 4)(x + 4)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
完全平方公式:因式分解 x^2 + 10x + 25。
(x + 5)(x + 5)
(x + 2)(x + 3)
(x + 5)^2
(x + 10)^2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
因式分解应用:如果 a = 2, b = 3,求 (a + b)^2 的因式分解。
(a + b)^2 = (a + b)(a - b) = (2 + 3)(2 - 3) = 5 * -1 = -5
(a + b)^2 = (a + b)(a + b) = (2 + 3)(2 + 3) = 5 * 5 = 25
(a + b)^2 = (a - b)(a - b) = (2 - 3)(2 - 3) = -1 * -1 = 1
(a + b)^2 = a^2 + b^2 = 2^2 + 3^2 = 4 + 9 = 13
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
提取公因式:将 12xy + 8x 进行因式分解。
4x(3y + 2)
3xy(4 + 2)
2x(6y + 4)
12x(1y + 0.67)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
平方差公式:因式分解 25y^2 - 9。
(5y - 5)(5y + 5)
(25y - 3)(25y + 3)
(5y - 9)(5y + 9)
(5y - 3)(5y + 3)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
完全平方公式:因式分解 4x^2 - 12x + 9。
(2x - 1)(2x - 9)
(4x - 3)^2
(2x - 3)^2
(2x + 3)^2
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