Factor 18y-2xy-72+8x

$18 y - 2 x y - 72 + 8 x$

Factor $2$ out of $18 y - 2 x y - 72 + 8 x$ .

Factor $2$ out of $18 y$ .

$2 (9 y) - 2 x y - 72 + 8 x$

Factor $2$ out of $- 2 x y$ .

$2 (9 y) + 2 (- x y) - 72 + 8 x$

Factor $2$ out of $- 72$ .

$2 (9 y) + 2 (- x y) + 2 (- 36) + 8 x$

Factor $2$ out of $8 x$ .

$2 (9 y) + 2 (- x y) + 2 (- 36) + 2 (4 x)$

Factor $2$ out of $2 (9 y) + 2 (- x y)$ .

$2 (9 y - x y) + 2 (- 36) + 2 (4 x)$

Factor $2$ out of $2 (9 y - x y) + 2 (- 36)$ .

$2 (9 y - x y - 36) + 2 (4 x)$

Factor $2$ out of $2 (9 y - x y - 36) + 2 (4 x)$ .

$2 (9 y - x y - 36 + 4 x)$

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

$2 ((9 y - x y) - 36 + 4 x)$

Factor out the greatest common factor (GCF) from each group.

$2 (y \cdot (9 - x) - 4 (9 - x))$

Factor.

Factor the polynomial by factoring out the greatest common factor, $9 - x$ .

$2 ((9 - x) (y - 4))$

Remove unnecessary parentheses.

$2 (9 - x) (y - 4)$