Answer
$\ln\frac{x^2}{\sqrt {x+5}}$
Work Step by Step
$2\ln x-\frac{1}{2}\ln(x+5)=\ln x^2-\ln(x+5)^{\frac{1}{2}}=\ln\frac{x^2}{(x+5)^{\frac{1}{2}}}=\ln\frac{x^2}{\sqrt {x+5}}$
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