Factor by Grouping y^2-by-ay+ab

$y^{2} - b y - a y + a b$

Step 1

Factor out the greatest common factor from each group.

Group the first two terms and the last two terms.

$(y^{2} - b y) - a y + a b$

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

$y (y - b) - a (y - 1 b)$

Step 2

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

$(y - b) (y - a)$