Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 10 - Exponents and Radicals - 10.1 Radical Expressions and Functions - 10.1 Exercise Set: 10

Answer

$\{-9,9\}$

Work Step by Step

Since $( -9 )^2= 81 $ and $ 9 ^2= 81 $, the square roots of $ 81 $ are $ \{-9,9\} $.
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