Answer
$\frac{u^{2}+3u+1}{u+1}$
Work Step by Step
We form a common denominator:
$\displaystyle u+1+\frac{u}{u+1}=\frac{(u+1)(u+1)}{u+1}+\frac{u}{u+1}=\frac{u^{2}+2u+1+u}{u+1}=\frac{u^{2}+3u+1}{u+1}$
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