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来源：学生作业帮 编辑：神马作文网作业帮 分类：数学作业 时间：2024/09/22 03:39:02
若n为正整数，且x2n=3，求（3x3n)2-4(x2)2n的值
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解题思路： 根据法则进行计算
解题过程：
答案见附件

最终答案：略
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