Answer
$18\sqrt[4]{b}$
Work Step by Step
Apply $\ \ \sqrt[n]{a^{m}}=a^{m/n},$
(18 is not raised to any power)
$18\cdot b^{1/4}=18\sqrt[4]{b^{1}}$
= $18\sqrt[4]{b}$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 7 - Exponents and Exponential Functions - 7-5 Rational Exponents and Radicals - Practice and Problem-Solving Exercises - Page 450: 24
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