Question

若3的m次方=6,3的n次方=2，求3的2m-3n次方的值

Answer 1

3的(2m-3n)次方
=3的2m次方÷3的3n次方
=(3的m次方)²÷(3的n次方)³
=6²÷2³
=36÷8
=4.5

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Answer 2

3的2m-3n次方
=3的2m次方/3的3n次方
=(3的m次方)²/(3的n次方)³
=6²/2³
=9/2

Answer 3

3的2m-3n次方
=(3^m)^2/(3^n)^3
=6^2/2^3
=36/8
=4.5

Answer 4

3^m=6,3^n=2
3^(2m-3n)=6^2/2^3=36/8=4.5

Answer 5

3^m=6 3^n=2
3^(2m-3n)
=(3^m)^2x(3^n)^(-3)

=6^2x2^(-3)
=36x1/8
=9/2