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5*x^3-(4*x^2)-((3/2)*x) = 0
5*x^3-4*x^2+(-3/2)*x = 0
5*x^3-4*x^2-3/2*x = 0
x*(5*x^2-4*x-3/2) = 0
5*x^2-4*x-3/2 = 0
DELTA = (-4)^2-(-3/2*4*5)
DELTA = 46
DELTA > 0
x = (46^(1/2)+4)/(2*5) or x = (4-46^(1/2))/(2*5)
x = (46^(1/2)+4)/10 or x = (4-46^(1/2))/10
x = 0
x = 0
x in { (4-46^(1/2))/10, (46^(1/2)+4)/10, 0 }
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