(x-1/2)(x+1/2)(x^2-1/2x+1/4)(x^2+1/2x+1/4)=[(x-1/2)(x^2+1/2x+1/4)][(x+1/2)(x^2-1/2x+1/4)]=(x^3-1/8)(x^3+1/8)=x^6-1/64
(x-1/2)(x+1/2)(x-1/2)^2(x+1/2)^2=(x-1/2)^3(x+1/2)^3
