已知抛物线y=-x²+4x-3与x轴相交与A.B两点,与y轴相交与点C,抛物线的对称轴交x轴与点E.(1)求A.B.C三点的坐标和抛物线的对称轴;(2)在平面直角坐标系xoy中是否存在点P.与A.B.C三点为顶点构
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![已知抛物线y=-x²+4x-3与x轴相交与A.B两点,与y轴相交与点C,抛物线的对称轴交x轴与点E.(1)求A.B.C三点的坐标和抛物线的对称轴;(2)在平面直角坐标系xoy中是否存在点P.与A.B.C三点为顶点构](/uploads/image/z/3815651-11-1.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D-x%26sup2%3B%2B4x-3%E4%B8%8Ex%E8%BD%B4%E7%9B%B8%E4%BA%A4%E4%B8%8EA.B%E4%B8%A4%E7%82%B9%2C%E4%B8%8Ey%E8%BD%B4%E7%9B%B8%E4%BA%A4%E4%B8%8E%E7%82%B9C%2C%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%BA%A4x%E8%BD%B4%E4%B8%8E%E7%82%B9E.%EF%BC%881%EF%BC%89%E6%B1%82A.B.C%E4%B8%89%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%E5%92%8C%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%EF%BC%9B%EF%BC%882%EF%BC%89%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BBxoy%E4%B8%AD%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8%E7%82%B9P.%E4%B8%8EA.B.C%E4%B8%89%E7%82%B9%E4%B8%BA%E9%A1%B6%E7%82%B9%E6%9E%84)
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