Verified answer

Generally, try grouping odd and even terms

(x^2 - xy) + (2x - 2y)

x * (x - y) + 2 * (x - y)

(x + 2)(x - y)

x² + 2x - xy - 2y =

x(x + 2) - y(x + 2) =

(x - y)(x + 2)