神马作文网必须正确 班主任很厉害 用因式分解算 （交叉相乘
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必须正确 班主任很厉害 用因式分解算 （交叉相乘
快点一到一道得发
快点一到一道得发
(6)(2a+b-6)*(2a+b-8)
(7)(2-a)*(1+5a)
(8)(2x+3)(x+5)
(1)xy(x-2)(5x+3)
(2)(7x^2-3)(x^2+2)
(3)(7x^2+2)(x^2-1)
(4)(7x^2+3y^2)(x^2-2y^2)
(5)(a-b+1)(2a-2b-3)
(6)(m+n-1)(2m+2n+3)
(7)(4x+2y-1)(4x+2y-3)
(8)(y-8z)(y+2z)
(9)(a+2b+2)(a+2b+3)
(10)(2x-4y-1)(2x-4y-3)
(11)(2ab-3cd)(4ab-5cd)
(12)2m(a^2-b^2)(a^2-4b^2)
(7)(2-a)*(1+5a)
(8)(2x+3)(x+5)
(1)xy(x-2)(5x+3)
(2)(7x^2-3)(x^2+2)
(3)(7x^2+2)(x^2-1)
(4)(7x^2+3y^2)(x^2-2y^2)
(5)(a-b+1)(2a-2b-3)
(6)(m+n-1)(2m+2n+3)
(7)(4x+2y-1)(4x+2y-3)
(8)(y-8z)(y+2z)
(9)(a+2b+2)(a+2b+3)
(10)(2x-4y-1)(2x-4y-3)
(11)(2ab-3cd)(4ab-5cd)
(12)2m(a^2-b^2)(a^2-4b^2)