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初中数学：除了待定系数法还有别的方法？双十字交叉相乘法更简单
初中数学：这道题除了用待定系数法外，是否还有别的解题方法？双十字交叉相乘法解题更简单。
初中数学，因式分解，常见考题，培优拓展专练244/340
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