Answer
$\sqrt[3]{27+a^3}$
Work Step by Step
Although the sum of two cubes $27+a^3$ can be factored as $(3+a)(9+3a+a^2)$, neither factor is a perfect cube.
Thus, the given radical is already in its simplest form.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter R - Review of Basic Concepts - R.7 Radical Expressions - R.7 Exercises - Page 75: 62
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