Answer
$2\sqrt {y}$
Work Step by Step
$3\sqrt {y}-\sqrt {y}= (3-1)\sqrt {y} = 2\sqrt {y}$
Combine like radicals, in this case subtract 1 from 3.
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.4 - Adding, Subtracting, and Multiplying Radical Expressions - Vocabulary and Readiness Check - Page 709: 8
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