已知2^m=3,4^n=2求2^2m-4n+1

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已知2^m=3,4^n=2求2^2m-4n+1已知2^m=3,4^n=2求2^2m-4n+1已知2^m=3,4^n=2求2^2m-4n+12^(2m-4n+1)=2^2m×2^(-4n)×2=(2^m

已知2^m=3,4^n=2求2^2m-4n+1
已知2^m=3,4^n=2求2^2m-4n+1

已知2^m=3,4^n=2求2^2m-4n+1
2^(2m-4n+1 )=2^2m×2^(-4n)×2
=(2^m)²×(4^n)^(-2)×2
=3²×2^(-2)×2
=9/2