化简2^N*2^4-2*2^N除以2*2^N*2^3

问题描述:

化简2^N*2^4-2*2^N除以2*2^N*2^3

2^N*2^4-2*2^N除以2*2^N*2^3
(2^N*2^4-2*2^N)/(2*2^N*2^3)
=2^N(2^4-2*)/(2*2^N*2^3)
= (2^4-2*)/(2*2^3)
=(2^3-1)/2^3
=1-1/2^3
=7/8