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: 87


$\displaystyle \frac{1}{9}$

Work Step by Step

Apply rule $\quad a^{m}\cdot a^{n}=a^{m+n}$: $3^{-6}\cdot 3^{4}=3^{-6+4}=3^{-2}$ Apply rule $\displaystyle \quad a^{-n}=\frac{1}{a^{n}}$: $=\displaystyle \frac{1}{3^{2}}$ $=\displaystyle \frac{1}{9}$
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