/ ___\ / ___\ / ___\ / ___\ | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | | 3 3*I*\/ 3 | (x + 3)*(x - 3)*|x + - + ---------|*|x + - - ---------|*|x + - - + ---------|*|x + - - - ---------| \ 2 2 / \ 2 2 / \ 2 2 / \ 2 2 /
/ 2 \ / 2 \ (-3 + x)*(3 + x)*\9 + x - 3*x/*\9 + x + 3*x/