(x+1)(x2+1)(x4+1)(x8+1)(x

(x+1)(x2+1)(x4+1)(x8+1)(x16+1)

1个回答

(x+1)(x2+1)(x4+1)(x8+1)(x16+1)
=(x+1)(x-1)(x2+1)(x4+1)(x8+1)(x16+1)/(x-1)
=(x32-1)/(x-1)
=1+x+x2+x3+...+x31

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