$[-/2$ Points$]$

SCALCET$91\mathrm{.}5\mathrm{.}043.$

Use the laws of logarithms to expand each expression.

$($a$)lo{g}_{10}(x^3{y}^{5}z)$

$($b$)ln(\frac{x^3}{\sqrt[\phantom{2}]{x^2-16}}),x>4$

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