Find the product: (x+2)(x−2)(x2+4)(x + 2)(x - 2)(x^2 + 4)(x+2)(x−2)(x2+4)
x4−4x^4 - 4x4−4
x4−16x^4 - 16x4−16
x4+16x^4 + 16x4+16
(x2−4)2(x^2-4)^2(x2−4)2