多,但回报大)1.已知关于X的方程X2-6x+(a-2)|x-3|+9-2a=0有且只有两个不相等的实数根,则实数a的取值范围是a=-2或a>0.2.函数图象与x轴交在(12,0)与y交在(0,2.4),求y=ax2+bx+c中a的取值范围3.在
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![多,但回报大)1.已知关于X的方程X2-6x+(a-2)|x-3|+9-2a=0有且只有两个不相等的实数根,则实数a的取值范围是a=-2或a>0.2.函数图象与x轴交在(12,0)与y交在(0,2.4),求y=ax2+bx+c中a的取值范围3.在](/uploads/image/z/14100334-70-4.jpg?t=%E5%A4%9A%2C%E4%BD%86%E5%9B%9E%E6%8A%A5%E5%A4%A7%EF%BC%891.%E5%B7%B2%E7%9F%A5%E5%85%B3%E4%BA%8EX%E7%9A%84%E6%96%B9%E7%A8%8BX2-6x%2B%EF%BC%88a-2%EF%BC%89%EF%BD%9Cx-3%EF%BD%9C%2B9-2a%3D0%E6%9C%89%E4%B8%94%E5%8F%AA%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%B8%8D%E7%9B%B8%E7%AD%89%E7%9A%84%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E5%88%99%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AFa%3D-2%E6%88%96a%3E0.2.%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E5%9C%A8%EF%BC%8812%2C0%EF%BC%89%E4%B8%8Ey%E4%BA%A4%E5%9C%A8%EF%BC%880%2C2.4%EF%BC%89%2C%E6%B1%82y%3Dax2%2Bbx%2Bc%E4%B8%ADa%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B43.%E5%9C%A8)
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