Answer
$\dfrac{5}{2}$
Work Step by Step
RECALL:
$a^{-m} = \dfrac{1}{a^m}, a\ne0$
Use the rule above to have:
$=\dfrac{1}{\frac{2}{5}}
\\=1 \cdot \dfrac{5}{2}
\\=\dfrac{5}{2}$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 7 - Exponents and Exponential Functions - 7-5 Division Properties of Exponents - Practice and Problem-Solving Exercises - Page 444: 41
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