Factor completely: x2+6x+9−y2x^2 + 6x + 9 - y^2x2+6x+9−y2.
(x+3−y)(x+3+y)(x + 3 - y)(x + 3 + y)(x+3−y)(x+3+y)
(x+3)2−y2(x + 3)^2 - y^2(x+3)2−y2 (unfactored)
(x−3+y)(x+3+y)(x - 3 + y)(x + 3 + y)(x−3+y)(x+3+y)
(x+3+y)2(x + 3 + y)^2(x+3+y)2