Answer
$\frac{9x^8}{49}$
Work Step by Step
$(\frac{3x^4}{7})^2$=$\frac{3^2x^8}{7^2}$=$\frac{9x^8}{49}$
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.