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初中数学：一个正数的两个平方根，是2m-4和3m-1，怎么求这个正数
初中数学：一个正数的两个平方根，是2m-4和3m-1，怎么求这个正数
实数，无理数，平方根，立方根，二次根式，常考题培优专练41/419
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