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12*x^2-((48/24)*x^5) = 0
12*x^2-2*x^5 = 0
12*x^2-2*x^5 = 0
2*x^2*(6-x^3) = 0
-1*x^3 = -6 // : -1
x^3 = 6
x^3 = 6 // ^ 1/3
x = 6^(1/3)
2*x^2 = 0
2*x^2 = 0 // : 2
x^2 = 0
x = 0
x in { 6^(1/3), 0 }
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