Simplify (x1/3−y1/3)2(x^{1/3} - y^{1/3})^2(x1/3−y1/3)2 for real x,yx, yx,y
x2/3−2xy3+y2/3x^{2/3} - 2\sqrt[3]{xy} + y^{2/3}x2/3−23xy+y2/3
x2/3−2x1/3y1/3+y2/3x^{2/3} - 2x^{1/3}y^{1/3} + y^{2/3}x2/3−2x1/3y1/3+y2/3
x−2x2y23+yx - 2\sqrt[3]{x^2 y^2} + yx−23x2y2+y
x2/3−(xy)1/3+y2/3x^{2/3} - (xy)^{1/3} + y^{2/3}x2/3−(xy)1/3+y2/3