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