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(3/4)*x^6-(5/2) = y // - y
(3/4)*x^6-y-(5/2) = 0
(3/4)*x^6-y-5/2 = 0
3/4*x^6 = -(-y-5/2) // : 3/4
x^6 = 4/3*(y+5/2)
x^6 = 4/3*(y+5/2) // ^ 1/6
abs(x) = (4/3)^(1/6)*(y+5/2)^(1/6)
x = (4/3)^(1/6)*(y+5/2)^(1/6) or x = -((4/3)^(1/6)*(y+5/2)^(1/6))
x in { (4/3)^(1/6)*(y+5/2)^(1/6), -((4/3)^(1/6)*(y+5/2)^(1/6)) }
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