(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)=?

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 17:40:43

(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)=?
(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)=?

(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)=?
(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=(2-1)(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=(2^2-1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=(2^4-1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=(2^8-1)(2^8+1) (2^16+1) (2^32+1)
=(2^16-1)(2^16+1)(2^32+1)
=(2^32-1)(2^32+1)
=2^64-1

这种题要灵活应用公式x^2-1=(x-1)(x+1)
(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=(2-1)(2+1)(2^2+1)(2^4+1) (2^8+1) (2^16+1) (2^32+1)
=2^64-1