化简(2乘以2的n+3次方)分之(2的n+4次方-2乘以2的n次方)的结果是?
问题描述:
化简(2乘以2的n+3次方)分之(2的n+4次方-2乘以2的n次方)的结果是?
答
=[2^(n+4)-2*2^n]/2*2^(n+3)
=2^(n+1)(8-1)/8*2^(n+1)
=7/8