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