a-1分之a的平方-a-1的值
展开全部
(a*a/a-1)-a-1
=a*a/a-1-(a+1)
=(a*a)/(a-1)-( a+1)*(a-1)/(a-1)
=(a*a)/(a-1)-(a*a+1)/(a-1)
=(a*a-a*a+1)/(a-1)
=1/(a-1)
思考很累,打字很累,求采纳!
=a*a/a-1-(a+1)
=(a*a)/(a-1)-( a+1)*(a-1)/(a-1)
=(a*a)/(a-1)-(a*a+1)/(a-1)
=(a*a-a*a+1)/(a-1)
=1/(a-1)
思考很累,打字很累,求采纳!
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
