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数学七下：已知2m-1=2，怎么求3+4m的值？幂的运算，基础训练题
数学七下：已知2m-1=2，怎么求3+4m的值？幂的运算，基础训练题
初中数学，幂的运算，幂的大小比较，基础训练，培优专题131/191
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