Simplify: (x−4)2(x - 4)^2(x−4)2.
x2−8x+16x^2 - 8x + 16x2−8x+16
x2−16x^2 - 16x2−16
x2+8x+16x^2 + 8x + 16x2+8x+16
x2−4x+16x^2 - 4x + 16x2−4x+16