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一元二次不等式的解法步骤
更新时间: 2021-03-22 02:41:04  

1、一元二次不等式解法有配方法、公式法、数轴穿根、一元二次函数图象进行求解4种方法。公式法可以解所有的一元二次方程,公式法不能解没有实数根的方程(也就是b2-4ac

关键词: 一元 不等式 解法 步骤

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