爱情这首歌原唱是谁:初一:整式的运算 一道简单题!
来源:百度文库 编辑:中科新闻网 时间:2024/05/19 09:21:26
用简便方法,要有过程!
6(7+1)(7^2+1)(7^4+1)(7^8+1)+1
6(7+1)(7^2+1)(7^4+1)(7^8+1)+1
(7-1)[6(7+1)(7^2+1)(7^4+1)(7^8+1)+1]/(7-1)
=[6(7^16-1)+7-1]/(7-1)
=7^16
(7-1)[6(7+1)(7^2+1)(7^4+1)(7^8+1)+1]/(7-1)
=[6(7^16-1)+7-1]/(7-1)
=7^16