Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 7 - Exponents and Exponential Functions - Chapter Review - Page 475: 7



Work Step by Step

According to the negative exponent rule, any number raised to a negative number has to be switched from numerator to denominator or denominator to numerator. So since the negative exponent is on the numerator flip it so it is in the denominator: $7^{-2}$=$\frac{1}{7^2}$=$\frac{1}{49}$.
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