Answer
2
Work Step by Step
$\lim\limits_{x\to 1}$ $\frac{x-1}{\sqrt x-1}$
= $\lim\limits_{x\to 1}$ $\frac{(\sqrt x-1)(\sqrt x+1)}{\sqrt x-1}$
= $\lim\limits_{x\to 1}$ $\sqrt x+1$
= $\sqrt 1$+1
=2
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