化简 a²-2ab+b²/a²-b²+b/a+b

问题描述:

化简 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-b)+b]/(a+b)
=a/(a+b)