Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.1 Algebra Essentials - A.1 Assess Your Understanding - Page A11: 86


$-\displaystyle \frac{1}{16}$

Work Step by Step

$-4^{-2}=-(4^{-2})$ Apply rule $\displaystyle \quad a^{-n}=\frac{1}{a^{n}}$ $-(4^{-2})=-\displaystyle \frac{1}{4^{2}}$ = $-\displaystyle \frac{1}{16}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.