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: 9

Answer

$1$

Work Step by Step

RECALL: For non-negative real numbers a, $\sqrt{a^2}=a$. Simplify each radical using the rule above to obtain $\sqrt{5^2}-\sqrt{4^2} \\=5-4 \\=1.$
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