Question

( frac{1^{2}-y^{2}}{(a-y)^{2}} cdot frac{x^{2}-x y+y^{2}}{x^{2}-2 n y+y^{2}} div frac{x^{3}+y^{3}}{(x-y)^{4}} )
( frac{(x-y)(x+y)}{(x-y)^{2}} cdot frac{left(n^{2}-n y+y^{2}right)}{(x-y)^{2}} div frac{n^{3}+y^{3}}{(x-y)^{4}} )
( frac{left(x^{3}+y^{3}right)(n-y)}{(x-y)^{4}} div frac{n^{3}+y^{3}}{(x-y)^{4}} )

# din x² - y² x² - xy + y +y The expression simplifies to (where ever defined) "(x - y) x-2xy + y (x−y)"

Solution