Answer
$ -16x^7$
Work Step by Step
We used: $x^n x^m = x^{n+m}$
$(-4)(4)x^{5+2} = -16x^7$
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.