SOLUTION: ((radical-sign)2y+7)+4=y I come up with: y*squared + 10y - 9

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Question 56933This question is from textbook Beginning Algebra
: ((radical-sign)2y+7)+4=y
I come up with:
y*squared + 10y - 9This question is from textbook Beginning Algebra

Answer by stanbon(48535) About Me  (Show Source):
You can put this solution on YOUR website!
((radical-sign)2y+7)+4=y
sqrt(2y+7 + 4 = y
sqrt(2y+7)=y-4
Square both sides to get:
2y+7 = y^2-8y+16
y^2-10y+9=0
(y-9)(y-1)=0
y=9 or y=1
Cheers,
Stan H.