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x in (-oo:+oo)
8/12 = x^10 // - x^10
8/12-x^10 = 0
-1*x^10 = -2/3 // : -1
x^10 = 2/3
x^10 = 2/3 // ^ 1/10
abs(x) = (2/3)^(1/10)
x = (2/3)^(1/10) or x = -(2/3)^(1/10)
x in { (2/3)^(1/10), -(2/3)^(1/10) }
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