X = 1-A, a ≠ 1, x64 = 1-B simplify (1 + x) (1 + x2) (1 + x4) (1 + x8) (1 + x16) (1 + X32)

(1+x)(1+x2)(1+x4)(1+x8)(1+x16)(1+x32)=(1-x)(1+x)(1+x2)(1+x4)...(1+x32)/(1-x)=(1-x2)(1+x2)(1+x4).(1+x32)/(1-x)=(1-x4)...(1+x32)/(1-x)=.=(1-x32)(1+x32)/(1-x)=(1-x64)/(1-x)=b/a

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