(x-y)²/(x²-y²)约分要过程

分类: 作业答案 • 2021-12-28 17:41:48

问题描述：

(x-y)²/(x²-y²)约分要过程

答

(x-y)²/(x²-y²)
=(x-y)²/(x+y)(x-y)
=(x-y)/(x+y)