帮看下这不等式怎么算?很简单!(1 + 1/x-1)÷ x/x^2-1

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帮看下这不等式怎么算?很简单!(1 + 1/x-1)÷ x/x^2-1
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帮看下这不等式怎么算?很简单!(1 + 1/x-1)÷ x/x^2-1
帮看下这不等式怎么算?很简单!
(1 + 1/x-1)÷ x/x^2-1

帮看下这不等式怎么算?很简单!(1 + 1/x-1)÷ x/x^2-1
[1+1/(x-1)]/[x/(x^2-1)]
=[(x-1+1)/(x-1)]*[(x^2-1)/x]
=[x/(x-1)]*[(x+1)(x-1)]/x]
=x(x+1)(x-1)/[x(x-1)]
=x+1