约分,(x-y)(a-b)/(x^2-y^2)(b-a)

来源：学生作业帮助网编辑：六六作业网时间：2024/11/16 09:46:15

约分,(x-y)(a-b)/(x^2-y^2)(b-a)约分,(x-y)(a-b)/(x^2-y^2)(b-a)约分,(x-y)(a-b)/(x^2-y^2)(b-a)(x-y)(a-b)______

约分,(x-y)(a-b)/(x^2-y^2)(b-a)
约分,(x-y)(a-b)/(x^2-y^2)(b-a)

约分,(x-y)(a-b)/(x^2-y^2)(b-a)
(x-y)(a-b)
___________
(x2-y2)(b-a)
=-(x-y)(b-a)
___________
(x-y)(x+y)(b-a)
= -1
____
(x+y)