用简便方法计算(2+10)(4+1)(16+1).(2* 2*2.*2+1) {32个2相乘}
问题描述:
用简便方法计算(2+10)(4+1)(16+1).(2* 2*2.*2+1) {32个2相乘}
答
(2+1)(4+1)(16+1).(2* 2*2.*2+1)
=(2-1)(2+1)(4+1)(16+1).(2* 2*2.*2+1)
=(4-1)(4+1)(16+1).(2* 2*2.*2+1)
=(16-1)(16+1).(2* 2*2.*2+1)
=……
=2的64次方-1