3 2 z - 3*z + 7*z - 5
z^3 - 3*z^2 + 7*z - 5
(x - 1)*(x + -1 + 2*I)*(x + -1 - 2*I)
((x - 1)*(x - 1 + 2*i))*(x - 1 - 2*i)
3 2 -5 + z - 3*z + 7*z
-5 + z^3 - 3*z^2 + 7*z
/ 2 \ (-1 + z)*\5 + z - 2*z/
(-1 + z)*(5 + z^2 - 2*z)
-5.0 + z^3 + 7.0*z - 3.0*z^2
-5 + z*(7 + z*(-3 + z))