SOLUTION: Hi I need help solving this: Solve the quadratic equation- 2x^2+20x-8 Thank you!

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Question 587105: Hi I need help solving this:
Solve the quadratic equation-
2x^2+20x-8
Thank you!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2+20x-8 = 0
Divide thru by 2 to get:
x^2 + 10x -4 = 0
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Use the Quadratic Formula:
x = [-10 +- sqrt(100-4*1*-4)]/2
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x = [-10 +- sqrt(116)]/2
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x = [-10 +- sqrt(4*29)]/2
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x = [-10 +- 2sqrt(29)]/2
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x = -5+sqrt(29) or x = -5-sqrt(29)
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Cheers,
Stan H.
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