计算(2+1)(2的2次方+1)(2的4次方+1)┄(2的2N次方+1).(N为正整数)
问题描述:
计算(2+1)(2的2次方+1)(2的4次方+1)┄(2的2N次方+1).(N为正整数)
答
(2+1)(2^2+1)(2^4+1)┄(2^2N+1)
=(2-1)(2+1)(2^2+1)(2^4+1)┄(2^2N+1)
=(2^2-1)(2^2+1)(2^4+1)┄(2^2N+1)
=(2^4-1)(2^4+1)...(2^2N+1)
...
=2^4N-1.