Answer
$log_{2}5x^{3}$
Work Step by Step
We know that $log_{b}xy=log_{b}x+log_{b}y$ (where $x$, $y$, and $b$ are positive real numbers and $b\ne1$).
Therefore, $log_{2}5+log_{2}x^{3}=log_{2}(5\times x^{3})=log_{2}5x^{3}$.
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