/ 3 2 \ \b - b + b - 1/*(b + 1)
(b^3 - b^2 + b - 1*1)*(b + 1)
1*(b + 1)*(b - 1)*(b + I)*(b - I)
(((1*(b + 1))*(b - 1))*(b + i))*(b - i)
4 -1 + b
-1 + b^4
(1.0 + b)*(-1.0 + b + b^3 - b^2)
/ 2\ (1 + b)*\1 + b /*(-1 + b)
(1 + b)*(1 + b^2)*(-1 + b)