SOLUTION: I am completely lost on how to work this problem. solve: y-2-8sqrt(y-2)+15 = 0

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: I am completely lost on how to work this problem. solve: y-2-8sqrt(y-2)+15 = 0       Log On


   

Question 82626: I am completely lost on how to work this problem. solve:
y-2-8sqrt(y-2)+15 = 0
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
get the sqrt term by itself and then square both sides ... y+13=8sqrt(y-2) ... (y+13)^2=64(y-2)

y^2+26y+169=64y-128 ... y^2-38y+297=0 ... factoring gives (y-27)(y-11)=0 ... y=27, y=11