Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.1 - Radical Expressions and Radical Functions - Practice - Page 680: 2

Answer

$9, -9$

Work Step by Step

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