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