分式x^2-y^2/(x-y)^2如何约分

分类: 作业答案 • 2022-04-11 18:45:20

问题描述：

答

=(x-y)(x+y)/(x-y)^2
=(x+y)/(x-y)

答

原式=（x+y)(x-y)/(x-y)^2
=(x+y)/(x-y)