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x in (-oo:+oo)
(1/2)*X*x^8+1*x^14 = 0
(1/2)*X*x^8+x^14 = 0
1/2*X*x^8+x^14 = 0
x^8*(1/2*X+x^6) = 0
1*x^6 = -(1/2*X) // : 1
x^6 = -1/2*X
x^6 = -1/2*X // ^ 1/6
abs(x) = (-1/2)^(1/6)*X^(1/6)
x = (-1/2)^(1/6)*X^(1/6) or x = -((-1/2)^(1/6)*X^(1/6))
x^8 = 0
1*x^8 = 0 // : 1
x^8 = 0
x = 0
x in { (-1/2)^(1/6)*X^(1/6), -((-1/2)^(1/6)*X^(1/6)), 0 }
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