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(x+1-((1-x)分之1))÷(x-((x-1)分之x平方))

题目详情
(x+1-((1-x)分之1))÷(x-((x-1)分之x平方))
▼优质解答
答案和解析
=[(x+1)(x-1)+1]/(x-1)÷[x(x-1)-x²]/(x-1)
=x²/(x-1)×(x-1)/(-x)
=-x