Answer
$27\sqrt[3]{a^{2}}$
Work Step by Step
Apply $\ \ \sqrt[n]{a^{m}}=a^{m/n},$
$(27$ is not being raised to any power)
$27a^{2/3}$= $27\sqrt[3]{a^{2}}$
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.