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10*w^6*x^2-(((8*u^6*x^4)/4)*x^5) = 0
10*w^6*x^2-2*u^6*x^9 = 0
10*w^6*x^2-2*u^6*x^9 = 0
2*x^2*(5*w^6-(u^6*x^7)) = 0
-u^6*x^7 = -(5*w^6) // : -u^6
x^7 = (-5*w^6)/(-u^6)
x^7 = (-5*w^6)/(-u^6) // ^ 1/7
x = (-5^(1/7)*w^(6/7))/(u^(6/7))
2*x^2 = 0
2*x^2 = 0 // : 2
x^2 = 0
x = 0
x in { (-5^(1/7)*w^(6/7))/(u^(6/7)), 0 }
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