-24*s - 28 ------------------- (4*s + 1)*(6*s + 1)
(-28.0 - 24.0*s)/((1.0 + 4.0*s)*(1.0 + 6.0*s))
-(28 + 24*s) ------------------- (1 + 4*s)*(1 + 6*s)
-(28 + 24*s) ---------------- 2 1 + 10*s + 24*s
-4*(7 + 6*s) ------------------- (1 + 4*s)*(1 + 6*s)