Simplify: xy+y2xy−y2⋅x−yx+y\frac{xy + y^2}{xy - y^2} \cdot \frac{x - y}{x + y}xy−y2xy+y2⋅x+yx−y
111
−1-1−1
x+yx−y\frac{x+y}{x-y}x−yx+y
x−yx+y\frac{x-y}{x+y}x+yx−y