/ 2 \ (a - 2)*\a + 2*a + 4/
(a - 1*2)*(a^2 + 2*a + 4)
/ ___\ / ___\ 1*(a - 2)*\a + 1 + I*\/ 3 /*\a + 1 - I*\/ 3 /
((1*(a - 2))*(a + (1 + i*sqrt(3))))*(a + (1 - i*sqrt(3)))
3 -8 + a
-8 + a^3
(-2.0 + a)*(4.0 + a^2 + 2.0*a)