已知二次函数y=ax2+bx+c(a不等于0)的图像如图所示,有下列4个结论:1.abc>0 2.2a+b0 4.a+已知二次函数y=ax2+bx+c(a不等于0)的图像如图所示,有下列4个结论:1. abc>0 2.2a+b<0 3.4a-2b+c>0 4.a+c>0 其中
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![已知二次函数y=ax2+bx+c(a不等于0)的图像如图所示,有下列4个结论:1.abc>0 2.2a+b0 4.a+已知二次函数y=ax2+bx+c(a不等于0)的图像如图所示,有下列4个结论:1. abc>0 2.2a+b<0 3.4a-2b+c>0 4.a+c>0 其中](/uploads/image/z/941943-39-3.jpg?t=%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax2%2Bbx%2Bc%EF%BC%88a%E4%B8%8D%E7%AD%89%E4%BA%8E0%EF%BC%89%E7%9A%84%E5%9B%BE%E5%83%8F%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%9C%89%E4%B8%8B%E5%88%974%E4%B8%AA%E7%BB%93%E8%AE%BA%3A1.abc%3E0+2.2a%2Bb0+4.a%2B%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax2%2Bbx%2Bc%EF%BC%88a%E4%B8%8D%E7%AD%89%E4%BA%8E0%EF%BC%89%E7%9A%84%E5%9B%BE%E5%83%8F%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%9C%89%E4%B8%8B%E5%88%974%E4%B8%AA%E7%BB%93%E8%AE%BA%3A1.+abc%26gt%3B0+2.2a%2Bb%26lt%3B0+3.4a-2b%2Bc%26gt%3B0+4.a%2Bc%26gt%3B0+%E5%85%B6%E4%B8%AD)
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