Разложение на множители
[src]/ _____________ \ / _____________ \ / _____________ \
| / ____ / ___\ | | / ____ / ___\ | | / ____ |
| 1 / 13 \/ 42 | 1 I*\/ 3 | 1 | | 1 / 13 \/ 42 | 1 I*\/ 3 | 1 | | 1 / 13 \/ 42 1 |
|x + - - - 3 / -- + ------ *|- - - -------| - ------------------------------------|*|x + - - - 3 / -- + ------ *|- - + -------| - ------------------------------------|*|x + - - - 3 / -- + ------ - --------------------|
| 2 \/ 8 4 \ 2 2 / _____________| | 2 \/ 8 4 \ 2 2 / _____________| | 2 \/ 8 4 _____________|
| / ___\ / ____ | | / ___\ / ____ | | / ____ |
| | 1 I*\/ 3 | / 13 \/ 42 | | | 1 I*\/ 3 | / 13 \/ 42 | | / 13 \/ 42 |
| 4*|- - - -------|*3 / -- + ------ | | 4*|- - + -------|*3 / -- + ------ | | 4*3 / -- + ------ |
\ \ 2 2 / \/ 8 4 / \ \ 2 2 / \/ 8 4 / \ \/ 8 4 /
$$\left(x + \left(- \frac{1}{2} - \frac{1}{4 \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}}} - \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}}\right)\right) \left(x + \left(- \frac{1}{2} - \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}} - \frac{1}{4 \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}}}\right)\right) \left(x + \left(- \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}} - \frac{1}{2} - \frac{1}{4 \sqrt[3]{\frac{\sqrt{42}}{4} + \frac{13}{8}}}\right)\right)$$