variable quadratic inequality
... 关键词一元二次不等式;一元二次函数;一元二次方程;知识点断层;解题思路 [gap=502]Key wordsone-variable quadratic inequality; one-variable quadratic function;one-variable quadratic equation;the separate knowledge points; problem-solving ..
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variable quadratic inequality
可变二次不等式
以上为机器翻译结果，长、整句建议使用 人工翻译 。