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((X^3)/2)*x^3-x^2-(3*x) = 0
((X^3)/2)*x^3-x^2-3*x = 0
1/2*X^3*x^3-x^2-3*x = 0
x*(1/2*X^3*x^2-x-3) = 0
1/2*X^3*x^2-x-3 = 0
DELTA = (-1)^2-(-3*1/2*4*X^3)
DELTA = 6*X^3+1
6*X^3+1 = 0
6*X^3 = -1 // : 6
X^3 = -1/6
X^3 = -1/6 // ^ 1/3
X = -(1/6)^(1/3)
DELTA = 0 <=> t_1 = -(1/6)^(1/3)
x = 1/(1/2*2*X^3) i X = -(1/6)^(1/3)
x = 1/(X^3) i X = -(1/6)^(1/3)
( x = ((6*X^3+1)^(1/2)+1)/(1/2*2*X^3) or x = (1-(6*X^3+1)^(1/2))/(1/2*2*X^3) ) i X > -(1/6)^(1/3)
( x = ((6*X^3+1)^(1/2)+1)/(X^3) or x = (1-(6*X^3+1)^(1/2))/(X^3) ) i X > -(1/6)^(1/3)
X+(1/6)^(1/3) > 0
X+(1/6)^(1/3) > 0 // - (1/6)^(1/3)
X > -(1/6)^(1/3)
x = 0
x = 0
x in { 1/(X^3), ((6*X^3+1)^(1/2)+1)/(X^3), (1-(6*X^3+1)^(1/2))/(X^3), 0 }
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