若3^m=6,9^=2,则3^2m-4n+1=( )

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若3^m=6,9^=2,则3^2m-4n+1=( )

3^m=6
9^n=2
3^(2m-4n+1)
=3^2m÷3^4n×3
=(3^m)^2÷(3^2)^2n×3
=6^2÷(9^n)^2×3
=36÷2^2×3
=9×3
=27