Сократите дробь x^2-y^2/y^3-x^3

Question

Сократите дробь x^2-y^2/y^3-x^3

Answer 1

(х-у)(х+у)/(у-х)(у^2+ху+х^2)=-(х+у)/ (у^2+ху+х^2).

Answer 2

(x-y)(x+y) /(y-x)(y²+xy+x²) =
-(y -x)(y+x) /(y-x)(y²+xy+x²) = -(y +x) /(y² +xy +x²)