Answer
$ log_3\frac{1}{x^{5/2}}$
Work Step by Step
$log_3\sqrt x-log_3x^3=log_3\frac{\sqrt x}{x^3}=log_3\frac{1}{x^{5/2}}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.