191问答库 > 求这道式子是怎么转化的？我会采纳的。

求这道式子是怎么转化的？我会采纳的。

2025-03-16 17:26:34
推荐回答（1个）
回答1：

这是一元二次方程的配方法，常数项是一次项系数一半的平方，加一个减一个才能保持式子不变。现把解题过程拍成图片如下图所示

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