Answer
$a^{-n}=\frac{1}{a^n}$
Work Step by Step
I took the expression directly from the definition of a negative exponent: for every nonzero number $a$ and integer $n$, $a^{-n}=\frac{1}{a^n}$. We use this rule to rewrite the expression.
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 7 - Exponents and Exponential Functions - Chapter Test - Page 467: 22
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