SOLUTION: solve the following system of equations algebraically y=2x^2+20x+15 and y=7x

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Question 755381: solve the following system of equations algebraically
y=2x^2+20x+15 and y=7x
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
y = 2x^2 + 20x + 15
y = 7x

2x^2 + 20x + 15 = 7x
2x^2 + 13x + 15 = 0
(2x + 3)(x + 5) = 0
x = -3/2, x = -5

solutions: (x, y) = (-3/2, -21/2) and (-5, -35)