Answer
The student should have taken the square root of 9 when they moved the 9 outside of the radical sign.
Work Step by Step
The student should have moved a 3 outside of the radical (since the square root of 9 is 3).
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 10 - Radical Expressions and Equations - Mid-Chapter Quiz - Page 619: 35
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