3 8*a + 27
8*a^3 + 27
/ ___\ / ___\ | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | 1*(a + 3/2)*|a + - - + ---------|*|a + - - - ---------| \ 4 4 / \ 4 4 /
((1*(a + 3/2))*(a - (3/4 + 3*i*sqrt(3)/4)))*(a - (3/4 - 3*i*sqrt(3)/4))
27.0 + 8.0*a^3
/ 2\ (3 + 2*a)*\9 - 6*a + 4*a /
(3 + 2*a)*(9 - 6*a + 4*a^2)