− v 2 u 5 − 2 v 3 u 4 + 4 v 2 u 4 − 2 v u 4 + 2 v 3 u 3 − 7 v 2 u 3 + 5 v u 3 − u 3 − v 3 u 2 + 5 v 2 u 2 − 7 v u 2 + 2 u 2 − 2 v 2 u + 4 v u − 2 u − v {\displaystyle -v^{2}u^{5}-2v^{3}u^{4}+4v^{2}u^{4}-2vu^{4}+2v^{3}u^{3}-7v^{2}u^{3}+5vu^{3}-u^{3}-v^{3}u^{2}+5v^{2}u^{2}-7vu^{2}+2u^{2}-2v^{2}u+4vu-2u-v}
