# How do you factor r^2-6tw+2wr-3tr?

${r}^{2} - 6 t w + 2 w r - 3 t r =$
${r}^{2} - 3 t r + 2 w r - 6 t w =$
$r \left(r - 3 t\right) + 2 w \left(r - 3 t\right) =$
$\left(r + 2 w\right) \left(r - 3 t\right)$