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x in (-oo:+oo)
x*((18-(3*x))/2) = -6 // + 6
x*((18-(3*x))/2)+6 = 0
x*((18-3*x)/2)+6 = 0
(x*(18-3*x))/2+6 = 0
(x*(18-3*x))/2+(2*6)/2 = 0
x*(18-3*x)+2*6 = 0
18*x-3*x^2+12 = 0
18*x-3*x^2+12 = 0
3*(6*x-x^2+4) = 0
6*x-x^2+4 = 0
DELTA = 6^2-(-1*4*4)
DELTA = 52
DELTA > 0
x = (52^(1/2)-6)/(-1*2) or x = (-52^(1/2)-6)/(-1*2)
x = (2*13^(1/2)-6)/(-2) or x = (-2*13^(1/2)-6)/(-2)
3*(x-((2*13^(1/2)-6)/(-2)))*(x-((-2*13^(1/2)-6)/(-2))) = 0
(3*(x-((2*13^(1/2)-6)/(-2)))*(x-((-2*13^(1/2)-6)/(-2))))/2 = 0
(3*(x-((2*13^(1/2)-6)/(-2)))*(x-((-2*13^(1/2)-6)/(-2))))/2 = 0 // * 2
3*(x-((2*13^(1/2)-6)/(-2)))*(x-((-2*13^(1/2)-6)/(-2))) = 0
( 3 )
3 = 0
x belongs to the empty set
( x-((-2*13^(1/2)-6)/(-2)) )
x-((-2*13^(1/2)-6)/(-2)) = 0 // + (-2*13^(1/2)-6)/(-2)
x = (-2*13^(1/2)-6)/(-2)
( x-((2*13^(1/2)-6)/(-2)) )
x-((2*13^(1/2)-6)/(-2)) = 0 // + (2*13^(1/2)-6)/(-2)
x = (2*13^(1/2)-6)/(-2)
x in { (-2*13^(1/2)-6)/(-2), (2*13^(1/2)-6)/(-2) }
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