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x in (-oo:+oo)
((3*n)/4)*x^12-((1/3)*x^12) = 2*n-((1/6)*x^12) // - 2*n-((1/6)*x^12)
((3*n)/4)*x^12-(2*n)-((1/3)*x^12)+(1/6)*x^12 = 0
((3*n)/4)*x^12-2*n+(-1/3)*x^12+(1/6)*x^12 = 0
3/4*n*x^12-2*n-1/6*x^12 = 0
t_1 = x^12
3/4*n*t_1^1-2*n-1/6*t_1^1 = 0
-2*n-1/6*t_1 = 0 // + -2*n
-1/6*t_1 = -(-2*n) // : -1/6
t_1 = (-(-2*n))/(-1/6)
t_1 = -12*n
t_1 = -12*n
x^12-(-12*n) = 0
12*n+x^12 = 0
1*x^12 = -(12*n) // : 1
x^12 = -12*n
x^12 = -12*n // ^ 1/12
abs(x) = (-12)^(1/12)*n^(1/12)
x = (-12)^(1/12)*n^(1/12) or x = -((-12)^(1/12)*n^(1/12))
x in { (-12)^(1/12)*n^(1/12), -((-12)^(1/12)*n^(1/12)) }
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