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