4 2 12*m - 108*m
12*m^4 - 108*m^2
2 / 2\ 12*m *\-9 + m /
12*m^2*(-9 + m^2)
1*(m + 3)*(m + 0)*(m - 3)
((1*(m + 3))*(m + 0))*(m - 3)
2 12*m *(-3 + m)*(3 + m)
12*m^2*(-3 + m)*(3 + m)
12.0*m^4 - 108.0*m^2