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x in (-oo:+oo)
6*x^4-(x^2*((12*x^3)/2)) = 0
6*x^4-6*x^5 = 0
6*x^4-6*x^5 = 0
6*x^4*(1-x) = 0
1-x = 0 // - 1
-x = -1 // * -1
x = 1
6*x^4 = 0
6*x^4 = 0 // : 6
x^4 = 0
x = 0
x in { 1, 0 }
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