− 3 u 2 v − 2 u 2 + 3 u v 2 − 5 u v + 3 u − 2 v 2 + 3 v u v {\displaystyle -{\frac {3u^{2}v-2u^{2}+3uv^{2}-5uv+3u-2v^{2}+3v}{uv}}}