Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.3 - Radicals and Rational Exponents - Exercise Set - Page 45: 59

Answer

The root is not a real number.

Work Step by Step

When the index is even, the radicand is not allowed to be negative since its root will not be a real number. The given radical has an index of 4, which is even, and a negative radicand. Thus, the root is not a real number.
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