SOLUTION: -2x(4-x)=15

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Question 1016157: -2x(4-x)=15
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
-2x(4-x)=15
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-8x + 2x^2 = 15
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2x^2 - 8x - 15 = 0
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x = [8 +- sqrt(64-4*2*-15)]/4
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x = [8 +- sqrt(184)]/4
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x = [8 +- sqrt(4*46)]/4
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x = [2 +- (1/2)sqrt(46)]
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Cheers,
Stan H.
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