Simplify x3−y3x2−y2⋅x+yx2+xy+y2\frac{x^3 - y^3}{x^2 - y^2} \cdot \frac{x+y}{x^2 + xy + y^2}x2−y2x3−y3⋅x2+xy+y2x+y.
x−yx+y\frac{x-y}{x+y}x+yx−y
x−yx-yx−y
111
x+yx+yx+y