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初中数学：怎么求(4x³-1997x-1994)2020的值？巧妙变形整体代入
初中数学：怎么求(4x³-1997x-1994)2020的值？巧妙变形整体代入
实数，无理数，平方根，立方根，二次根式，常考题培优专练62/419
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