已知x^m=3,x^n=6,求x^3m-2n的值
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已知x^m=3,x^n=6,求x^3m-2n的值
已知x^m=3,x^n=6,求x^3m-2n的值
已知x^m=3,x^n=6,求x^3m-2n的值
x^3m-2n=(x^m)^3/(x^n)^2=3^3/6^2=27/36
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