Answer
$-4x^{2}$
Work Step by Step
$\sqrt[3] (-64x^{6})=-4x^{2}$, because $(-4x^{2})^{3}=-4x^{2}\times -4x^{2}\times -4x^{2}=(-4\times-4\times-4)\times x^{2+2+2}=-64x^{6}$
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.