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12*x^4+24*x^3-(((12*x)/6)*x^2)-(6*x^2) = 0
12*x^4+24*x^3-2*x^3-6*x^2 = 0
12*x^4+22*x^3-6*x^2 = 0
2*x^2*(6*x^2+11*x-3) = 0
6*x^2+11*x-3 = 0
DELTA = 11^2-(-3*4*6)
DELTA = 193
DELTA > 0
x = (193^(1/2)-11)/(2*6) or x = (-193^(1/2)-11)/(2*6)
x = (193^(1/2)-11)/12 or x = (-(193^(1/2)+11))/12
2*x^2 = 0
2*x^2 = 0 // : 2
x^2 = 0
x = 0
x in { (-(193^(1/2)+11))/12, (193^(1/2)-11)/12, 0 }
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