C-03-Q111mediumsingle_mcqFactorize x2+6x+8−y2+2yx^2 + 6x + 8 - y^2 + 2yx2+6x+8−y2+2y:a(x+y+2)(x−y+4)(x+y+2)(x-y+4)(x+y+2)(x−y+4)b