− v 3 u 3 + 3 v 2 u 3 − 3 v u 3 + u 3 + 3 v 3 u 2 − 10 v 2 u 2 + 10 v u 2 − 3 u 2 − 3 v 3 u + 10 v 2 u − 10 v u + 3 u + v 3 − 3 v 2 + 3 v − 1 {\displaystyle -v^{3}u^{3}+3v^{2}u^{3}-3vu^{3}+u^{3}+3v^{3}u^{2}-10v^{2}u^{2}+10vu^{2}-3u^{2}-3v^{3}u+10v^{2}u-10vu+3u+v^{3}-3v^{2}+3v-1}
