/ ___________________ \ / ___________________ \ / ___________________\
| / ____ / ___\| | / ____ / ___\| | / ____ |
| / 189 81*I*\/ 23 | 1 I*\/ 3 || | / 189 81*I*\/ 23 | 1 I*\/ 3 || | / 189 81*I*\/ 23 |
| 3 / --- + ----------- *|- - - -------|| | 3 / --- + ----------- *|- - + -------|| | 3 / --- + ----------- |
| 12 \/ 2 2 \ 2 2 /| | 12 \/ 2 2 \ 2 2 /| | 12 \/ 2 2 |
|x + ---------------------------------------- + ----------------------------------------|*|x + ---------------------------------------- + ----------------------------------------|*|x + ------------------------ + ------------------------|
| ___________________ 3 | | ___________________ 3 | | ___________________ 3 |
| / ___\ / ____ | | / ___\ / ____ | | / ____ |
| | 1 I*\/ 3 | / 189 81*I*\/ 23 | | | 1 I*\/ 3 | / 189 81*I*\/ 23 | | / 189 81*I*\/ 23 |
| |- - - -------|*3 / --- + ----------- | | |- - + -------|*3 / --- + ----------- | | 3 / --- + ----------- |
\ \ 2 2 / \/ 2 2 / \ \ 2 2 / \/ 2 2 / \ \/ 2 2 /
$$\left(x + \left(\frac{\left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}}{3} + \frac{12}{\left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}}\right)\right) \left(x + \left(\frac{12}{\left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}} + \frac{\left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}}{3}\right)\right) \left(x + \left(\frac{12}{\sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}} + \frac{\sqrt[3]{\frac{189}{2} + \frac{81 \sqrt{23} i}{2}}}{3}\right)\right)$$
((x + 12/((-1/2 - i*sqrt(3)/2)*(189/2 + 81*i*sqrt(23)/2)^(1/3)) + (189/2 + 81*i*sqrt(23)/2)^(1/3)*(-1/2 - i*sqrt(3)/2)/3)*(x + 12/((-1/2 + i*sqrt(3)/2)*(189/2 + 81*i*sqrt(23)/2)^(1/3)) + (189/2 + 81*i*sqrt(23)/2)^(1/3)*(-1/2 + i*sqrt(3)/2)/3))*(x + 12/(189/2 + 81*i*sqrt(23)/2)^(1/3) + (189/2 + 81*i*sqrt(23)/2)^(1/3)/3)