Question

How do you factor ax−ay−x²+2xy−y²?

Answer 1

$ax - ay - x ^{2} + 2xy - y ^{2}$

$a(x - y) - (x ^{2} - 2xy + y ^{2} )$

$a(x - y)(x - y) ^{2}$

$(x - y)(x - y + a)$