(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^2-1/4)(x^2+1/2x+1/4)(x^2-1/2x+1/4)
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