/ ___________\ / ___________\ / _____________\ / _____________\
| / ___ | | / ___ | | / ___ | | / ___ |
| / 1 \/ 5 | | / 1 \/ 5 | | / 1 \/ 5 | | / 1 \/ 5 |
x*|x + I* / - + ----- |*|x - I* / - + ----- |*|x + / - - + ----- |*|x - / - - + ----- |
\ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 / \ \/ 2 2 /
$$x \left(x + i \sqrt{\frac{1}{2} + \frac{\sqrt{5}}{2}}\right) \left(x - i \sqrt{\frac{1}{2} + \frac{\sqrt{5}}{2}}\right) \left(x + \sqrt{- \frac{1}{2} + \frac{\sqrt{5}}{2}}\right) \left(x - \sqrt{- \frac{1}{2} + \frac{\sqrt{5}}{2}}\right)$$
(((x*(x + i*sqrt(1/2 + sqrt(5)/2)))*(x - i*sqrt(1/2 + sqrt(5)/2)))*(x + sqrt(-1/2 + sqrt(5)/2)))*(x - sqrt(-1/2 + sqrt(5)/2))