化简4^n+2-2^2m+3/4^m-1
问题描述:
化简4^n+2-2^2m+3/4^m-1
答
[ 4^(n+2) - 2^(2m+3) ] / 4^(m-1)
= [ 2^(2n+4) - 2^(2m+3) ] / 2^(2m-2)
= 2^(2n-2m+6) - 2^5
= 4^(n-m+3) - 32