(24m^4-3m)/(4m^4+2m^3+m^2)
(3m(8m^3-1))/(m^2(4m^2+2m+1))
(3m(2m-1)(4m^2+2m+1))/(m^2(4m^2+2m+1))
(3m(2m-1))/m^2
(3(2m-1))/m
6(2m-1)/m