− 3 v 2 u 2 + 5 v u 2 − 2 u 2 + 5 v 2 u − 9 v u + 5 u − 2 v 2 + 5 v − 3 {\displaystyle -3v^{2}u^{2}+5vu^{2}-2u^{2}+5v^{2}u-9vu+5u-2v^{2}+5v-3}
