3 u 2 v − 3 u 2 + 3 u v 2 − 7 u v + 3 u − 3 v 2 + 3 v u v {\displaystyle {\frac {3u^{2}v-3u^{2}+3uv^{2}-7uv+3u-3v^{2}+3v}{uv}}}
