Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 10 - Radical Expressions and Equations - Common Core Cumulative Standards Review - Selected Response - Page 660: 23


-3 is incorrect while 4 is correct.

Work Step by Step

Even though -3 is technically correct, we assume the positive root when taking the square root of a number, i.e. the absolute value. 4 is correct because it is positive, meaning it is assumed to be the square root of the number.
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