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a^2*x^3-((1/8)*a^2*(x+1)^3) = 0
(-1/8)*a^2*(x+1)^3+a^2*x^3 = 0
a^2*x^3-1/8*a^2*(x+1)^3 = 0
a^2*x^3-1/8*a^2*(x+1)^3 = 0
7/8*a^2*x^3-3/8*a^2*x^2-3/8*a^2*x-1/8*a^2 = 0
7/8*a^2*x^3-3/8*a^2*x^2-3/8*a^2*x-1/8*a^2 = 0
1/8*a^2*(7*x^3-3*x^2-3*x-1) = 0
7*x^3-3*x^2-3*x-1 = 0
{ 1, -1 }
1
x = 1
7*x^3-3*x^2-3*x-1 = 0
1
x-1
7*x^2+4*x+1
7*x^3-3*x^2-3*x-1
x-1
7*x^2-7*x^3
4*x^2-3*x-1
4*x-4*x^2
x-1
1-x
0
7*x^2+4*x+1 = 0
DELTA = 4^2-(1*4*7)
DELTA = -12
DELTA < 0
x in { 1}
1/8*a^2*(x-1) = 0
1/8*a^2*(x-1) = 0
x-1 = 0 // + 1
x = 1
x = 1
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