Answer
$x=6$
Work Step by Step
We know that if $a\gt0,a\ne1$, then $a^b=a^c\longrightarrow b=c$
$81=3^4$
Thus here: $x-2=4\\x=6$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 9 - Test - Page 754: 19
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