Answer
$\log_{3} (x^{7}y^{9})$
Work Step by Step
$7\log_{3} x+9\log_{3} y$
=$\log_{3} x^{7}+\log_{3} y^{9}$
=$\log_{3} (x^{7}\times y^{9})$
=$\log_{3} (x^{7}y^{9})$
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