3 2 z + 5*z + 17*z + 13
z^3 + 5*z^2 + 17*z + 13
3 2 13 + z + 5*z + 17*z
13 + z^3 + 5*z^2 + 17*z
(x + 1)*(x + 2 + 3*I)*(x + 2 - 3*I)
((x + 1)*(x + 2 + 3*i))*(x + 2 - 3*i)
/ 2 \ (1 + z)*\13 + z + 4*z/
(1 + z)*(13 + z^2 + 4*z)
13 + z*(17 + z*(5 + z))
13.0 + z^3 + 5.0*z^2 + 17.0*z