Answer
$4$
Work Step by Step
Divide $128$ by $8$ then simplify to obtain:
\begin{align*}
&=\sqrt{16}\\
&=\sqrt{4^2}\\
&=4
\end{align*}
Algebra 2 Common Core
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133186024
ISBN 13:
978-0-13318-602-4
Chapter 6 - Radical Functions and Rational Exponents - Chapter Review - Page 423: 20
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