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