# How do you factor by grouping xy+4x-2y-8?

Try collecting $y$ between the first and third term and $4$ between the second and the fourth:
$y \left(x - 2\right) + 4 \left(x - 2\right) =$ now collect $\left(x - 2\right)$;
$\left(x - 2\right) \left(y + 4\right)$