求解,好的加分
展开全部
原式=[1/a²+1/b²+2/(a+b)×(a+b)/(ab)]÷[(a+b)²/(ab)]
=[1/a²+1/b²+2/(ab)]×[ab/(a+b)²]
=[(a²+b²+2ab)/(a²b²)]×[ab/(a+b)²]
=[(a+b)²/(ab)]×[1/(a+b)²]
=1/(ab)
=[1/a²+1/b²+2/(ab)]×[ab/(a+b)²]
=[(a²+b²+2ab)/(a²b²)]×[ab/(a+b)²]
=[(a+b)²/(ab)]×[1/(a+b)²]
=1/(ab)
本回答被提问者采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询