Factor 20xy-16x-5y+4

$20 x y - 16 x - 5 y + 4$

Step 1

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

$(20 x y - 16 x) - 5 y + 4$

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

$4 x (5 y - 4) - (5 y - 4)$

Step 2

Factor the polynomial by factoring out the greatest common factor, $5 y - 4$ .

$(5 y - 4) (4 x - 1)$