1/3a+1/6a^2=a^2-4/2a^3

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Solution for 1/3a+1/6a^2=a^2-4/2a^3 equation: 


a in (-oo:+oo)

(1/6)*a^2+(1/3)*a = a^2-((4/2)*a^3) // - a^2-((4/2)*a^3)

(4/2)*a^3+(1/6)*a^2-a^2+(1/3)*a = 0

2*a^3-5/6*a^2+1/3*a = 0

a*(2*a^2-5/6*a+1/3) = 0

2*a^2-5/6*a+1/3 = 0

DELTA = (-5/6)^2-(1/3*2*4)

DELTA = -71/36

DELTA < 0

a = 0

a = 0

a = 0

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