/ 2\ (1 + 3*y)*\1 - 3*y + 9*y /
/ ___\ / ___\ | 1 I*\/ 3 | | 1 I*\/ 3 | (x + 1/3)*|x + - - + -------|*|x + - - - -------| \ 6 6 / \ 6 6 /