/ _______________ \ / _______________ \ / _______________\
| / ____ / ___\| | / ____ / ___\| | / ____ |
| / 25 3*\/ 69 | 1 I*\/ 3 || | / 25 3*\/ 69 | 1 I*\/ 3 || | / 25 3*\/ 69 |
| 3 / -- + -------- *|- - - -------|| | 3 / -- + -------- *|- - + -------|| | 3 / -- + -------- |
| 1 1 \/ 2 2 \ 2 2 /| | 1 1 \/ 2 2 \ 2 2 /| | 1 1 \/ 2 2 |
|x + - - + -------------------------------------- + ------------------------------------|*|x + - - + -------------------------------------- + ------------------------------------|*|x + - - + ---------------------- + --------------------|
| 3 _______________ 3 | | 3 _______________ 3 | | 3 _______________ 3 |
| / ___\ / ____ | | / ___\ / ____ | | / ____ |
| | 1 I*\/ 3 | / 25 3*\/ 69 | | | 1 I*\/ 3 | / 25 3*\/ 69 | | / 25 3*\/ 69 |
| 3*|- - - -------|*3 / -- + -------- | | 3*|- - + -------|*3 / -- + -------- | | 3*3 / -- + -------- |
\ \ 2 2 / \/ 2 2 / \ \ 2 2 / \/ 2 2 / \ \/ 2 2 /
$$\left(x + \left(- \frac{1}{3} + \frac{\left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}}{3} + \frac{1}{3 \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}}\right)\right) \left(x + \left(- \frac{1}{3} + \frac{1}{3 \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}} + \frac{\left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}}{3}\right)\right) \left(x + \left(- \frac{1}{3} + \frac{1}{3 \sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}} + \frac{\sqrt[3]{\frac{3 \sqrt{69}}{2} + \frac{25}{2}}}{3}\right)\right)$$
((x - 1/3 + 1/(3*(-1/2 - i*sqrt(3)/2)*(25/2 + 3*sqrt(69)/2)^(1/3)) + (25/2 + 3*sqrt(69)/2)^(1/3)*(-1/2 - i*sqrt(3)/2)/3)*(x - 1/3 + 1/(3*(-1/2 + i*sqrt(3)/2)*(25/2 + 3*sqrt(69)/2)^(1/3)) + (25/2 + 3*sqrt(69)/2)^(1/3)*(-1/2 + i*sqrt(3)/2)/3))*(x - 1/3 + 1/(3*(25/2 + 3*sqrt(69)/2)^(1/3)) + (25/2 + 3*sqrt(69)/2)^(1/3)/3)