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怎么运用十字相乘法计算

2025-04-02 07:23:56

推荐回答（2个）

回答（1）：

你好！十字相乘法的方法简单点来讲就是：十字左边相乘等于二次项系数，右边相乘等于常数项，交叉相乘再相加等于一次项系数。
十字相乘法能把某些二次三项式分解因式。

回答（2）：

十字相乘法就是能把某些二次三项式分解因式如果还不懂就自己百度“十字相乘法” 第一行百度百科上有顺便鄙视下楼上的复制狂

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