3 z + 8
z^3 + 8
/ ___\ / ___\ 1*(x + 2)*\x + -1 + I*\/ 3 /*\x + -1 - I*\/ 3 /
((1*(x + 2))*(x - (1 + i*sqrt(3))))*(x - (1 - i*sqrt(3)))
8.0 + z^3
/ 2 \ (2 + z)*\4 + z - 2*z/
(2 + z)*(4 + z^2 - 2*z)