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X*((x^2-(11*x)-30)/3) = 0
X*((x^2-11*x-30)/3) = 0
(X*(x^2-11*x-30))/3 = 0
x^2-11*x-30 = 0
x^2-11*x-30 = 0
DELTA = (-11)^2-(-30*1*4)
DELTA = 241
DELTA > 0
x = (241^(1/2)+11)/(1*2) or x = (11-241^(1/2))/(1*2)
x = (241^(1/2)+11)/2 or x = (11-241^(1/2))/2
(x-((11-241^(1/2))/2))*(x-((241^(1/2)+11)/2)) = 0
(X*(x-((11-241^(1/2))/2))*(x-((241^(1/2)+11)/2)))/3 = 0
( x-((11-241^(1/2))/2) )
x-((11-241^(1/2))/2) = 0 // + (11-241^(1/2))/2
x = (11-241^(1/2))/2
( x-((241^(1/2)+11)/2) )
x-((241^(1/2)+11)/2) = 0 // + (241^(1/2)+11)/2
x = (241^(1/2)+11)/2
x in { (11-241^(1/2))/2, (241^(1/2)+11)/2 }
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