30 points plz

mario writes the equation (x+y)' = 22 + 4 pythagorean theorem. xy) to begin a proof of the use the drop-down menus to explain why this is a true equation. (x+y)+= 2 + 4(3 ry) clear check c )? finds the area of the outer square by squaring its side length. + 41 ) finds the area of the outer square by adding the area of the inner square and the four triangles. these expressions are equal because they both give the area of the outer square.