Answer
$y=9$
Work Step by Step
You are given $4+\sqrt y=7$.Solve for y:
$\sqrt y=3$
$\sqrt {(y)^2} = {3}^{2}$ -square both sides-
$y=9$
Check solution:
$4+\sqrt {9}=7$
$4+3=7$
$7=7$
The solution is $y=9$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 10 - Radical Expressions and Equations - Chapter Review - Page 655: 38
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