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(1)2x(x+y)-4(x+y)^2.(2)(x+y)(b-a)+(x-y)(a-b)的分解因式解答过程

题目详情
(1)2x(x+y)-4(x+y)^2.(2)(x+y)(b-a)+(x-y)(a-b)的分解因式解答过程
▼优质解答
答案和解析
(1)2x(x+y)-4(x+y)^2
=(x+y)(2x-4x-4y)
=(x+y)(-2x-4y)
=-2(x+y)(x+2y)
(2)(x+y)(b-a)+(x-y)(a-b)
=(-x-y)(a-b)+(x-y)(a-b)
=(a-b)(-x-y+x-y)
=-2y(a-b)