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x in (-oo:+oo)
27*x^5-(x^2*((6*x^4)/3)) = 0
27*x^5-2*x^6 = 0
27*x^5-2*x^6 = 0
x^5*(27-2*x) = 0
27-2*x = 0 // - 27
-2*x = -27 // : -2
x = -27/(-2)
x = 27/2
x^5 = 0
1*x^5 = 0 // : 1
x^5 = 0
x = 0
x in { 27/2, 0 }
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