Answer
$\log_5(4x^{\frac{1}{3}})$
Work Step by Step
We know that $x\log_ab=\log_ab^x$ and that $\log_ab+\log_ac=\log_a(bc)$
Hence here $\log_54+\frac{1}{3}\log_5x=\log_54+\log_5x^{\frac{1}{3}}=\log_5(4x^{\frac{1}{3}})$
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