化简：a²-2ab+b²/a²-b²+b/a+b

分类: 作业答案 • 2022-04-12 12:30:02

问题描述：

答

a²-2ab+b²/a²-b²+b/a+b
=(a-b）^2/(a+b）（a-b）+b/a+b
=（a-b）/（a+b）+b/a+b
=a/（a+b)

答

a²-2ab+b²/a²-b²+b/a+b
=(a²-2ab+b²)/(a²-b²)+b/(a+b)
=(a-b)²/[(a+b)(a-b)]+b/(a+b)
=(a-b)/(a+b)+b/(a+b)
=a/(a+b)