− v 3 u 3 + 4 v 2 u 3 − 3 v u 3 + 3 v 3 u 2 − 11 v 2 u 2 + 11 v u 2 − 2 u 2 − 2 v 3 u + 11 v 2 u − 11 v u + 3 u − 3 v 2 + 4 v − 1 {\displaystyle -v^{3}u^{3}+4v^{2}u^{3}-3vu^{3}+3v^{3}u^{2}-11v^{2}u^{2}+11vu^{2}-2u^{2}-2v^{3}u+11v^{2}u-11vu+3u-3v^{2}+4v-1}
