Answer
$12\sqrt 2$
Work Step by Step
$\sqrt 288=\sqrt (144\times2)=\sqrt 144\times\sqrt 2=12\sqrt 2$
We know that $\sqrt 144=12$, because $12^{2}=144$.
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.