− v u 5 + 2 u 5 + 4 v u 4 − 8 u 4 − 9 v u 3 + 11 u 3 + 11 v u 2 − 9 u 2 − 8 v u + 4 u + 2 v − 1 {\displaystyle -vu^{5}+2u^{5}+4vu^{4}-8u^{4}-9vu^{3}+11u^{3}+11vu^{2}-9u^{2}-8vu+4u+2v-1}
