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初中数学：若x+1=2018²+2019²，怎么求根号(2x+1)的值？要思路
初中数学：若x+1=2018²+2019²，怎么求根号(2x+1)的值？要思路
实数，无理数，平方根，立方根，二次根式，常考题培优专练4/419
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