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x^5*((12*x^9-(16*x^3))/4) = 0
x^5*((12*x^9-16*x^3)/4) = 0
(x^5*(12*x^9-16*x^3))/4 = 0
12*x^9-16*x^3 = 0
4*x^3*(3*x^6-4) = 0
3*x^6 = 4 // : 3
x^6 = 4/3
x^6 = 4/3 // ^ 1/6
abs(x) = (4/3)^(1/6)
x = (4/3)^(1/6) or x = -(4/3)^(1/6)
4*x^3*(x-(4/3)^(1/6))*(x+(4/3)^(1/6)) = 0
(4*x^3*x^5*(x-(4/3)^(1/6))*(x+(4/3)^(1/6)))/4 = 0
( 4*x^3 )
4*x^3 = 0 // : 4
x^3 = 0
x = 0
( x+(4/3)^(1/6) )
x+(4/3)^(1/6) = 0 // - (4/3)^(1/6)
x = -(4/3)^(1/6)
( x-(4/3)^(1/6) )
x-(4/3)^(1/6) = 0 // + (4/3)^(1/6)
x = (4/3)^(1/6)
( x^5 )
1*x^5 = 0 // : 1
x^5 = 0
x = 0
x in { 0, -(4/3)^(1/6), (4/3)^(1/6), 0 }
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