Question 90116
{{{ax-ay+x^2-xy}}}


{{{(ax-ay)+(x^2-xy)}}} Group like terms


{{{a(x-y)+x(x-y)}}} Factor out the GCF


{{{(a+x)(x-y)}}} Combine like terms


Notice if we foil {{{(a+x)(x-y)}}} we get {{{ax-ay+x^2-xy}}} again