Answer
$= \ln \frac{5x^{2}z^{3}}{y^{4}}$
Work Step by Step
$= \ln 5 + 2 \ln x + 3 \ln z - 4 \ln y$
$= \ln 5 + \ln x^{2} + \ln z^{3} - \ln y^{4}$
$= \ln 5x^{2}z^{3}- \ln y^{4}$
$= \ln \frac{5x^{2}z^{3}}{y^{4}}$
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