若3^m =6;9^n =2,则3^2m-4n+1 =_________
问题描述:
若3^m =6;9^n =2,则3^2m-4n+1 =_________
答
3^m =6;9^n =2,则
3^2m-4n+1=(3^m)^2/(3^2n)^2*3=6^2/2^2*3=27