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x^3*((12*x^7-(6*x^5))/2) = 0
x^3*((12*x^7-6*x^5)/2) = 0
(x^3*(12*x^7-6*x^5))/2 = 0
12*x^7-6*x^5 = 0
6*x^5*(2*x^2-1) = 0
2*x^2 = 1 // : 2
x^2 = 1/2
x^2 = 1/2 // ^ 1/2
abs(x) = (1/2)^(1/2)
x = (1/2)^(1/2) or x = -(1/2)^(1/2)
6*x^5*(x-(1/2)^(1/2))*(x+(1/2)^(1/2)) = 0
(6*x^3*x^5*(x-(1/2)^(1/2))*(x+(1/2)^(1/2)))/2 = 0
( 6*x^5 )
6*x^5 = 0 // : 6
x^5 = 0
x = 0
( x+(1/2)^(1/2) )
x+(1/2)^(1/2) = 0 // - (1/2)^(1/2)
x = -(1/2)^(1/2)
( x-(1/2)^(1/2) )
x-(1/2)^(1/2) = 0 // + (1/2)^(1/2)
x = (1/2)^(1/2)
( x^3 )
1*x^3 = 0 // : 1
x^3 = 0
x = 0
x in { 0, -(1/2)^(1/2), (1/2)^(1/2), 0 }
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