Simplify the expression: x3−y3x2−y2\frac{x^3 - y^3}{x^2 - y^2}x2−y2x3−y3 (assume x≠±yx \neq \pm yx=±y).
x2+xy+y2x+y\frac{x^2 + xy + y^2}{x + y}x+yx2+xy+y2
x−yx - yx−y
x2−xy+y2x−y\frac{x^2 - xy + y^2}{x - y}x−yx2−xy+y2
x+yx + yx+y