− v u 5 + 3 u 5 + 4 v u 4 − 6 u 4 − 7 v u 3 + 8 u 3 + 8 v u 2 − 7 u 2 − 6 v u + 4 u + 3 v − 1 {\displaystyle -vu^{5}+3u^{5}+4vu^{4}-6u^{4}-7vu^{3}+8u^{3}+8vu^{2}-7u^{2}-6vu+4u+3v-1}
