双眼皮几天拆线好:(2+1)(2^2+1)(2^4+1)....(2^64+1)+1

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(2+1)(2^2+1)(2^4+1)....(2^64+1)+1
=(2-1)(2+1)(2^2+1)(2^4+1)....(2^64+1)+1
=((2^2-1)(2^2+1))(2^4+1)....(2^64+1)+1
=(2^4-1)(2^4+1)....(2^64+1)+1
......
=(2^64-1)(2^64+1)+1
=2^128-1+1
=2^128

答案是2^128
(2+1)(2^2+1)=(2^2-1)(2^2+1)=2^4-1
(2^4-1)(2^4+1)=2^8-1
依次类推
(2+1)(2^2+1)(2^4+1)....(2^64+1)=2^128-1
所以答案是2^128