已知x^m=2,x^n=3,求x^3m-2n的值?
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已知x^m=2,x^n=3,求x^3m-2n的值?已知x^m=2,x^n=3,求x^3m-2n的值?已知x^m=2,x^n=3,求x^3m-2n的值?x^3m-2n=x^(3m)÷x^(2n)=(x^
已知x^m=2,x^n=3,求x^3m-2n的值?
已知x^m=2,x^n=3,求x^3m-2n的值?
已知x^m=2,x^n=3,求x^3m-2n的值?
x^3m-2n=x^(3m)÷x^(2n)=(x^m)^3÷（x^n)^2=2³÷3²=8/9
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