Разложение на множители
[src] / ___________\ / ___________\ / ___________\ / ___________\
| / ___ | | / ___ | | / ___ | | / ___ |
| / 5 \/ 5 | | / 5 \/ 5 | | / 5 \/ 5 | | / 5 \/ 5 |
| ___ I* / - + ----- | | ___ I* / - + ----- | | ___ I* / - - ----- | | ___ I* / - - ----- |
| 1 \/ 5 \/ 8 8 | | 1 \/ 5 \/ 8 8 | | 1 \/ 5 \/ 8 8 | | 1 \/ 5 \/ 8 8 |
(x - 1/3)*|x + -- - ----- + ------------------|*|x + -- - ----- - ------------------|*|x + -- + ----- + ------------------|*|x + -- + ----- - ------------------|
\ 12 12 3 / \ 12 12 3 / \ 12 12 3 / \ 12 12 3 /
$$\left(x - \frac{1}{3}\right) \left(x + \left(- \frac{\sqrt{5}}{12} + \frac{1}{12} + \frac{i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{3}\right)\right) \left(x + \left(- \frac{\sqrt{5}}{12} + \frac{1}{12} - \frac{i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}}{3}\right)\right) \left(x + \left(\frac{1}{12} + \frac{\sqrt{5}}{12} + \frac{i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{3}\right)\right) \left(x + \left(\frac{1}{12} + \frac{\sqrt{5}}{12} - \frac{i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}}{3}\right)\right)$$