x-4+x-3/18x^2

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Solution for x-4+x-3/18x^2 equation: 


x in (-oo:+oo)

x-((3/18)*x^2)+x-4 = 0

(-1/6)*x^2+x+x-4 = 0

2*x-1/6*x^2-4 = 0

DELTA = 2^2-(-4*(-1/6)*4)

DELTA = 4/3

DELTA > 0

x = ((4/3)^(1/2)-2)/(-1/6*2) or x = (-(4/3)^(1/2)-2)/(-1/6*2)

x = -3*((4/3)^(1/2)-2) or x = 3*((4/3)^(1/2)+2)

x in { -3*((4/3)^(1/2)-2), 3*((4/3)^(1/2)+2) }

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