Answer
$-\frac{1}{16}$.
Work Step by Step
The given expression is
$=-4^{-2}$
Use the law of exponents $a^{-b}=\frac{1}{a^b}$
$=-\frac{1}{4^{2}}$
Use $4^2=16$.
$=-\frac{1}{16}$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.1 Algebra Essentials - A.1 Assess Your Understanding - Page A12: 88
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