сократите дроби

m^2-n^2/mn-n^2

ax-ay/x^2-2xy+y^2

1) m^2 -(n^2/m)*n-n^2 m^2-(n^3/m)-n^2 (m^3-n^3-mn^2)/m2)ax- (ay/x^2)-2xy+y^2 (ax^3-ay-2x^3*y+x^2*y^2)/x^2