Answer
$1.5 =y$
Work Step by Step
$\sqrt {y+12} = 3\sqrt y$
$(\sqrt {y+12})^2 = (3\sqrt y)^2$
$y+12 = 3^2*y$
$y+12 = 9y$
$y+12-y = 9y-y$
$12 = 8y$
$12/8 = 8y/8$
$y= 1.5$
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 - 10-4 Solving Radical Equations - Practice and Problem-Solving Exercises - Page 624: 47
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