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(2*x^15)/4+15/4 = 15/4+9 // - 15/4+9
(2*x^15)/4+15/4-(15/4)-9 = 0
(2*x^15)/4+15/4-15/4-9 = 0
1/2*x^15 = 9 // : 1/2
x^15 = 18
x^15 = 18 // ^ 1/15
x = 18^(1/15)
x = 18^(1/15)
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