Упростите выражения (4xy) / (y^ (2) -x^ (2) 1) / (y^ (2) -x^ (2)+(1) /x^ (2)+2xy-y^ (2

(4xy/ (y^2-x^2) 1/ (y^2-x^2)+1/ (x^2+2xy+y^2)=(4xy/ (y^2-x^2) 1/ (y-x) (y+x)+1/ (y+x) ^2)=4xy/ (y^2-x^2) y-x+y+x) / (y+x) ^2*(y-x)=4xy/ (y^2-x^2) 2y/ (y+x) ^2*(y-x)=(4xy*(y+x) ^2*(y-x) / (2y*(y^2-x^2)=2x*(y+x) ^2*(y-x) / (y-x) (y+x)=2x (y+x)