/ 2 \ (2*a - 1)*\4*a + 2*a + 1/
(2*a - 1*1)*(4*a^2 + 2*a + 1)
/ ___\ / ___\ | 1 I*\/ 3 | | 1 I*\/ 3 | 1*(a - 1/2)*|a + - + -------|*|a + - - -------| \ 4 4 / \ 4 4 /
((1*(a - 1/2))*(a + (1/4 + i*sqrt(3)/4)))*(a + (1/4 - i*sqrt(3)/4))
3 -1 + 8*a
-1 + 8*a^3
(-1.0 + 2.0*a)*(1.0 + 2.0*a + 4.0*a^2)