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