College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter P, Prerequisites - Section P.4 - Rational Exponents and Radicals - P.4 Exercises - Page 30: 58



Work Step by Step

Evaluate the given expression by substituting the given values of the variable to obtain: $=(3 \cdot 4)^{2(-1)} \\=12^{-2}$ Use the rule $a^{-m} = \dfrac{1}{a^m}, a\ne0$ to obtain: $=\dfrac{1}{12^2} \\=\dfrac{1}{144}$
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