SOLUTION: the sum of the solutions of 3x^+3x=36

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Question 83835: the sum of the solutions of 3x^+3x=36
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
3x^2 + 3x = 36
x^2 + x = 12
(x + 0.5)^2 = 12.25
x = -0.5 +- 3.5
x = -4 and x = 3
Sum ~> -4 + 3 = -1