− 2 u v w − 3 u v − 3 u w + 3 u − 3 v w + 3 v + 3 w − 2 u v w {\displaystyle -{\frac {2uvw-3uv-3uw+3u-3vw+3v+3w-2}{{\sqrt {u}}{\sqrt {v}}{\sqrt {w}}}}}