Answer
$x=-3$ or $x=1$
Work Step by Step
$(4^x)^{x+2}=64\\4^{x(x+2)}=4^3$
Thus $x(x+2)=3\\x^2+2x-3=0\\(x+3)(x-1)=0$
Thus $x=-3$ or $x=1$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 6 Rational Exponents and Radical Functions - 6.2 Apply Properties of Rational Exponents - 6.2 Exercises - Skill Practice - Page 425: 82c
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