数学题(好的追分20)已知二次函数y=ax^2+bx+c与y轴交于点C,与x轴交于点A(X1,0)(X2,0)(X1
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![数学题(好的追分20)已知二次函数y=ax^2+bx+c与y轴交于点C,与x轴交于点A(X1,0)(X2,0)(X1](/uploads/image/z/970164-36-4.jpg?t=%E6%95%B0%E5%AD%A6%E9%A2%98%28%E5%A5%BD%E7%9A%84%E8%BF%BD%E5%88%8620%29%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax%5E2%2Bbx%2Bc%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9C%2C%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%EF%BC%88X1%2C0%EF%BC%89%EF%BC%88X2%2C0%EF%BC%89%EF%BC%88X1)
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