计算a²+a/a-1÷(a-a/a-1)要完整的过程
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计算a²+a/a-1÷(a-a/a-1)要完整的过程
计算a²+a/a-1÷(a-a/a-1)要完整的过程
计算a²+a/a-1÷(a-a/a-1)要完整的过程
原式=a(a+1)/(a-1)÷a(a-1-1)/(a-1)
=a(a+1)/(a-1)×(a-1)/a(a-2)
=(a+1)/(a-2)