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x in (-oo:+oo)
32*(-1/2)*x^2+1000*x+50 = 0
1000*x-16*x^2+50 = 0
DELTA = 1000^2-(-16*4*50)
DELTA = 1003200
DELTA > 0
x = (1003200^(1/2)-1000)/(-16*2) or x = (-1003200^(1/2)-1000)/(-16*2)
x = (40*627^(1/2)-1000)/(-32) or x = (-40*627^(1/2)-1000)/(-32)
x in { (40*627^(1/2)-1000)/(-32), (-40*627^(1/2)-1000)/(-32) }
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