计算(2+1)(2^2+1)(2^4+1)+。。。。+(2^2n+1)

来源:百度知道 编辑:UC知道 时间:2024/05/22 12:26:39
要有过程,谢谢

原式=(2-1)(2+1)(2^2+1)(2^3+1)……(2^n+1)
=(2^2-1)((2^2+1)(2^3+1)……(2^n+1)
=……
=(2^n+1)(2^n-1)
=2^2n-1

(2+1)(2^2+1)(2^4+1)+。。。。+(2^2n+1)之间应该是“*”号,不是“+”

(2+1)*(2^2+1)*(2^4+1)*……*(2^2n+1)
解:原式=(2-1)*(2+1)*(2^2+1)*(2^4+1)*……*(2^n+1)
=(2^2-1*(2^2+1)*(2^4+1)*……*(2^n+1)
=(2^4-1)(2^4+1)*……*(2^n+1)
=(2^n+1)(2^n-1)
=2^2n-1