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6*w^4*x^2-(((9*w)/6)*w^3*y^6) = 0
6*w^4*x^2+(-3/2)*w^4*y^6 = 0
6*w^4*x^2 = -(-3/2*w^4*y^6) // : 6*w^4
x^2 = 1/4*y^6
x^2 = 1/4*y^6 // ^ 1/2
abs(x) = 1/2*y^3
x = 1/2*y^3 or x = -(1/2*y^3)
x in { 1/2*y^3, -(1/2*y^3) }
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