Answer
$0$
Work Step by Step
$5^{2+2x}=25\Rightarrow 5^{2+2x}=5^{2}\Rightarrow 2+2x=2\Rightarrow x=\dfrac {2-2}{2}=0$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.2 Exponential Functions - 4.2 Exercises - Page 432: 76
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