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((8*u^3*x^6)/10)*u^3*y^3+8*u^2 = 0
4/5*u^6*x^6*y^3 = -(8*u^2) // : 4/5*u^6*y^3
x^6 = -10*u^-4*y^-3
x^6 = -10*u^-4*y^-3 // ^ 1/6
abs(x) = (-10)^(1/6)*u^(-2/3)*y^(-1/2)
x = (-10)^(1/6)*u^(-2/3)*y^(-1/2) or x = -((-10)^(1/6)*u^(-2/3)*y^(-1/2))
x in { (-10)^(1/6)*u^(-2/3)*y^(-1/2), -((-10)^(1/6)*u^(-2/3)*y^(-1/2)) }
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