+129899 (x + y)^2 = x^2 + y^2
x^2 + 2xy + y^2 = x^2 + y^2 (subtract x^2, y^2 from both sides)
2xy = 0
xy = 0 which implies that x = 0 or y = 0 or both = 0
+55 Oh, i've also had this burning question, why do all your answers have hundreds of spaces XD
