/ _____________ \ / _____________ \ / _____________ \ | / ____ / ___\ | | / ____ / ___\ | | / ____ | | 1 / 25 \/ 69 | 1 I*\/ 3 | 1 | | 1 / 25 \/ 69 | 1 I*\/ 3 | 1 | | 1 / 25 \/ 69 1 | |x + - - 3 / -- + ------ *|- - - -------| - ------------------------------------|*|x + - - 3 / -- + ------ *|- - + -------| - ------------------------------------|*|x + - - 3 / -- + ------ - --------------------| | 3 \/ 54 18 \ 2 2 / _____________| | 3 \/ 54 18 \ 2 2 / _____________| | 3 \/ 54 18 _____________| | / ___\ / ____ | | / ___\ / ____ | | / ____ | | | 1 I*\/ 3 | / 25 \/ 69 | | | 1 I*\/ 3 | / 25 \/ 69 | | / 25 \/ 69 | | 9*|- - - -------|*3 / -- + ------ | | 9*|- - + -------|*3 / -- + ------ | | 9*3 / -- + ------ | \ \ 2 2 / \/ 54 18 / \ \ 2 2 / \/ 54 18 / \ \/ 54 18 /
((x + 1/3 - (25/54 + sqrt(69)/18)^(1/3)*(-1/2 - i*sqrt(3)/2) - 1/(9*(-1/2 - i*sqrt(3)/2)*(25/54 + sqrt(69)/18)^(1/3)))*(x + 1/3 - (25/54 + sqrt(69)/18)^(1/3)*(-1/2 + i*sqrt(3)/2) - 1/(9*(-1/2 + i*sqrt(3)/2)*(25/54 + sqrt(69)/18)^(1/3))))*(x + 1/3 - (25/54 + sqrt(69)/18)^(1/3) - 1/(9*(25/54 + sqrt(69)/18)^(1/3)))