-1/2x^2+100x

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Solution for -1/2x^2+100x equation: 


x in (-oo:+oo)

(-1/2)*x^2+100*x = 0

100*x-1/2*x^2 = 0

DELTA = 100^2-(-1/2*0*4)

DELTA = 10000

DELTA > 0

x = (10000^(1/2)-100)/(-1/2*2) or x = (-10000^(1/2)-100)/(-1/2*2)

x = 0 or x = 200

x in { 0, 200 }

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