1.(x2-3)2-4x2(所有2均为平方)2.(a+b)2+(a+c)2-(c+d)2-(b+d)2(2同上)3.一元二次不等式mx2+(m+1)x+1>0的解为全体实数,求m得取值(均同上)4.求a的值,使关于x的不等式ax2+2x+6a
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![1.(x2-3)2-4x2(所有2均为平方)2.(a+b)2+(a+c)2-(c+d)2-(b+d)2(2同上)3.一元二次不等式mx2+(m+1)x+1>0的解为全体实数,求m得取值(均同上)4.求a的值,使关于x的不等式ax2+2x+6a](/uploads/image/z/10230426-18-6.jpg?t=1.%EF%BC%88x2-3%292-4x2%EF%BC%88%E6%89%80%E6%9C%892%E5%9D%87%E4%B8%BA%E5%B9%B3%E6%96%B9%EF%BC%892.%EF%BC%88a%2Bb%292%2B%28a%2Bc%292-%28c%2Bd%292-%28b%2Bd%292%282%E5%90%8C%E4%B8%8A%EF%BC%893.%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E4%B8%8D%E7%AD%89%E5%BC%8Fmx2%2B%28m%2B1%29x%2B1%3E0%E7%9A%84%E8%A7%A3%E4%B8%BA%E5%85%A8%E4%BD%93%E5%AE%9E%E6%95%B0%2C%E6%B1%82m%E5%BE%97%E5%8F%96%E5%80%BC%EF%BC%88%E5%9D%87%E5%90%8C%E4%B8%8A%EF%BC%894.%E6%B1%82a%E7%9A%84%E5%80%BC%2C%E4%BD%BF%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%8D%E7%AD%89%E5%BC%8Fax2%2B2x%2B6a)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/08/10 12:52:42