3 64 + b
64 + b^3
/ ___\ / ___\ 1*(b + 4)*\b + -2 + 2*I*\/ 3 /*\b + -2 - 2*I*\/ 3 /
((1*(b + 4))*(b - (2 + 2*i*sqrt(3))))*(b - (2 - 2*i*sqrt(3)))
64.0 + b^3
/ 2 \ (4 + b)*\16 + b - 4*b/
(4 + b)*(16 + b^2 - 4*b)