Factor x2−6x−16x^2 - 6x - 16x2−6x−16.
(x−8)(x+2)(x - 8)(x + 2)(x−8)(x+2)
(x−4)(x−4)(x - 4)(x - 4)(x−4)(x−4)
(x−2)(x−8)(x - 2)(x - 8)(x−2)(x−8)
(x+4)(x−4)(x + 4)(x - 4)(x+4)(x−4)