3 c + 27
c^3 + 27
/ ___\ / ___\ | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | 1*(c + 3)*|c + - - + ---------|*|c + - - - ---------| \ 2 2 / \ 2 2 /
((1*(c + 3))*(c - (3/2 + 3*i*sqrt(3)/2)))*(c - (3/2 - 3*i*sqrt(3)/2))
/ 2 \ (3 + c)*\9 + c - 3*c/
(3 + c)*(9 + c^2 - 3*c)
27.0 + c^3