SOLUTION: Solve the following system of equations for the positive value of y: x = 2y x + y^2 = 15

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Question 198515: Solve the following system of equations for the positive value of y:
x = 2y
x + y^2 = 15
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the following system of equations for the positive value of y:
x = 2y
x + y^2 = 15
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Substitue for "x" to get:
2y + y^2 = 15
y^2 + 2y - 15 = 0
(y+5)(y-3) = 0
y = -5 or y = 3
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Cheers,
Stan H.