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: 83

Answer

$16$

Work Step by Step

$\left( -4\right) ^{2}=\left( -4\right) \times \left( -4\right) =4^{2}=16$
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