Factor x4+4x^4 + 4x4+4 over the integers (Sophie Germain identity).
(x2+2x+2)(x2−2x+2)(x^2+2x+2)(x^2-2x+2)(x2+2x+2)(x2−2x+2)
(x2+2)2−4x2(x^2+2)^2-4x^2(x2+2)2−4x2
(x2−2)(x2+2)(x^2-2)(x^2+2)(x2−2)(x2+2)
(x+2)2(x−2)2(x+2)^2(x-2)^2(x+2)2(x−2)2