/ ___\ / ___\ / ___\ / ___\ (x + 2)*(x - 2)*\x + 1 + I*\/ 3 /*\x + 1 - I*\/ 3 /*\x + -1 + I*\/ 3 /*\x + -1 - I*\/ 3 /
/ 2 \ / 2 \ (-2 + z)*(2 + z)*\4 + z - 2*z/*\4 + z + 2*z/