(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)

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(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)

(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)
(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)

(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)
(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)
=(x^2-1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)
=(x^64-1)^2

(x-1)(x+1)(x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1) =(x^2-1)x^2+1)(x^4+1)(x^8+1)……(x^32+1)(x^64-1)=(x^4-1))(x^4+1)(x^8+1)……(x^32+1)(x^64-1)=(x^8-1)(x^8+1)……(x^32+1)(x^64-1)=……=(x^64-1)^2