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x in (-oo:+oo)
(-1/6)*x*(x+1/2+18)+2 = x+0 // - x+0
(-1/6)*x*(x+1/2+18)-x+0+2 = 0
(-1/6)*x*(x+1/2+18)-x+2 = 0
2-1/6*x*(x+37/2)-x = 0
2-1/6*x*(x+37/2)-x = 0
2-1/6*x^2-49/12*x = 0
2-1/6*x^2-49/12*x = 0
2-1/6*x^2-49/12*x = 0
DELTA = (-49/12)^2-(-1/6*2*4)
DELTA = 2593/144
DELTA > 0
x = ((2593/144)^(1/2)+49/12)/(-1/6*2) or x = (49/12-(2593/144)^(1/2))/(-1/6*2)
x = -3*((2593/144)^(1/2)+49/12) or x = -3*(49/12-(2593/144)^(1/2))
(x+3*((2593/144)^(1/2)+49/12))*(x+3*(49/12-(2593/144)^(1/2))) = 0
(x+3*((2593/144)^(1/2)+49/12))*(x+3*(49/12-(2593/144)^(1/2))) = 0
( x+3*((2593/144)^(1/2)+49/12) )
x+3*((2593/144)^(1/2)+49/12) = 0 // - 3*((2593/144)^(1/2)+49/12)
x = -(3*((2593/144)^(1/2)+49/12))
x = -3*((2593/144)^(1/2)+49/12)
( x+3*(49/12-(2593/144)^(1/2)) )
x+3*(49/12-(2593/144)^(1/2)) = 0 // - 3*(49/12-(2593/144)^(1/2))
x = -(3*(49/12-(2593/144)^(1/2)))
x = -3*(49/12-(2593/144)^(1/2))
x in { -3*((2593/144)^(1/2)+49/12), -3*(49/12-(2593/144)^(1/2)) }
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