（a-b)(x-y)-(b-a)(x+y)初二数学题因式分解求过程与答案

网友回答

(a-b)(x-y)-(b-a)(x+y)
=(a-b)(x-y)+(a-b)(x+y)
=(a-b)(x-y+x+y)
=2(a-b)x
======以下答案可供参考======
供参考答案1:
先变一下：（a-b）（b-a）-(x-y)(x+y)
=(a-b)(x+y)
=(a-b)(x-y+x+y)
=2x(a-b)