/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: fernandobarrera54966 https://cdn.slidesharecdn.com/profile-photo-fernandobarrera54966-48x48.jpg?cb=1523389196 Si sabes hallar el problema es que tenemos halgo en comun: SEA X=Y entonces: x² = xy x²-y² =xy -y² (x+y)(x-y)=y(x-y) X+y=y 2y=y 2=1