Разложение на множители
[src]/ 3 ___ 3 ____\ / 3 ___ 3 ____ 3 ___ ___ 3 ____\ / 3 ___ 3 ____ 3 ___ ___ 3 ____\
| \/ 2 *\/ -b | | \/ 2 *\/ -b I*\/ 2 *\/ 3 *\/ -b | | \/ 2 *\/ -b I*\/ 2 *\/ 3 *\/ -b |
|a - ------------|*|a + ------------ + --------------------|*|a + ------------ - --------------------|*b
\ 2 / \ 4 4 / \ 4 4 /
$$b \left(a - \frac{\sqrt[3]{2} \sqrt[3]{- b}}{2}\right) \left(a + \left(\frac{\sqrt[3]{2} \sqrt[3]{- b}}{4} + \frac{\sqrt[3]{2} \sqrt{3} i \sqrt[3]{- b}}{4}\right)\right) \left(a + \left(\frac{\sqrt[3]{2} \sqrt[3]{- b}}{4} - \frac{\sqrt[3]{2} \sqrt{3} i \sqrt[3]{- b}}{4}\right)\right)$$