Which of these (x,y)(x, y)(x,y) satisfy x2−y2=5x^2 - y^2 = 5x2−y2=5?
(3,2)(3, 2)(3,2)
(3,−2)(3, -2)(3,−2)
(−3,2)(-3, 2)(−3,2)
(2,1)(2, 1)(2,1)