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24*x^4 = 36*x^3-(((12*x^2)/12)*x^2) // - 36*x^3-(((12*x^2)/12)*x^2)
24*x^4+((12*x^2)/12)*x^2-(36*x^3) = 0
24*x^4+((12*x^2)/12)*x^2-36*x^3 = 0
25*x^4-36*x^3 = 0
x^3*(25*x-36) = 0
25*x-36 = 0 // + 36
25*x = 36 // : 25
x = 36/25
x^3 = 0
1*x^3 = 0 // : 1
x^3 = 0
x = 0
x in { 36/25, 0 }
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