− v u 5 − 2 v 2 u 4 + 4 v u 4 − 2 u 4 − v 3 u 3 + 6 v 2 u 3 − 8 v u 3 + 2 u 3 + 2 v 3 u 2 − 8 v 2 u 2 + 6 v u 2 − u 2 − 2 v 3 u + 4 v 2 u − 2 v u − v 2 {\displaystyle -vu^{5}-2v^{2}u^{4}+4vu^{4}-2u^{4}-v^{3}u^{3}+6v^{2}u^{3}-8vu^{3}+2u^{3}+2v^{3}u^{2}-8v^{2}u^{2}+6vu^{2}-u^{2}-2v^{3}u+4v^{2}u-2vu-v^{2}}
