3 8*a - 27
8*a^3 - 1*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 + 4*a + 6*a/
(-3 + 2*a)*(9 + 4*a^2 + 6*a)