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