/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: valterfreo https://cdn.slidesharecdn.com/profile-photo-valterfreo-48x48.jpg?cb=1523558789 Sou professor de Matemática, formado na Unisc - de Santa Cruz do Sul