Answer
$\dfrac{3^8}{3^4}=3^4$
$3^4=81$
Work Step by Step
$\dfrac{a^m}{a^n}=a^{m-n}, a \ne 0$
Thus,
$\dfrac{3^8}{3^4}
\\=3^{8-4}
\\=3^4
\\=3(3)(3)(3)
\\=81$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 5 - Number Theory and the Real Number System - 5.6 Exponents and Scientific Notation - Exercise Set 5.6 - Page 319: 12
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