若a的2n次幂等于3，求a的3n次幂的4次方的值？急急急急急！！！！！！！

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a的2n次幂等于3;
(a的3n次幂)的4次方弊弊枣=(a的租拆n次幂)的12次方=(a的2n次幂)的6次方=3的6次方=3³卜圆*3³=27*27=729

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(a^3n)^4
=(a^2n)^6
=3^6
=729

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(a^3n)^4=a^12n=(a^2n)^6=3^6=729

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3^6

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