3 2 16*x + 8*x + x
16*x^3 + 8*x^2 + x
1*(x + 1/4)*(x + 0)
(1*(x + 1/4))*(x + 0)
/ 2\ x*\1 + 8*x + 16*x /
x*(1 + 8*x + 16*x^2)
x + 8.0*x^2 + 16.0*x^3
2 x*(1 + 4*x)
x*(1 + 4*x)^2