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x in (-oo:+oo)
x-(((16000*2^1)/2)*x^2) = 0
x-16000*x^2 = 0
x-16000*x^2 = 0
DELTA = 1^2-(-16000*0*4)
DELTA = 1
DELTA > 0
x = (1^(1/2)-1)/(-16000*2) or x = (-1^(1/2)-1)/(-16000*2)
x = 0 or x = 1/16000
x in { 0, 1/16000 }
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