括号2+1乘以括号2的平方+1乘以2的4次方+1乘以2的8次方+1+1
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(2+1)×(2^2+1)×(2^4+1)×(2^8+1)+1
=(2^2-1)×(2^2+1)×(2^4+1)×(2^8+1)+1
=(2^4-1)×(2^4+1)×(2^8+1)+1
=(2^8-1)×(2^8+1)+1
=2^16-1+1
=2^16
(1+1/2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)
=(1-1/2)(1+1/2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)/(1-1/2)
=(1-1/2^2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^4)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^8)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^16)×(1+1/2^16)×2
=(1-1/2^32)×2
=2-1/2^31
=(2^2-1)×(2^2+1)×(2^4+1)×(2^8+1)+1
=(2^4-1)×(2^4+1)×(2^8+1)+1
=(2^8-1)×(2^8+1)+1
=2^16-1+1
=2^16
(1+1/2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)
=(1-1/2)(1+1/2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)/(1-1/2)
=(1-1/2^2)×(1+1/2^2)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^4)×(1+1/2^4)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^8)×(1+1/2^8)×(1+1/2^16)×2
=(1-1/2^16)×(1+1/2^16)×2
=(1-1/2^32)×2
=2-1/2^31
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