如图,二次函数y=ax²+bx+c的图像交x轴于A(-1,0),B(2,0),交y轴于C(0,-2),作直线AC.(1)求二次函数的解析式;(20)点P在二次函数图象上,且PA=PC,求点P的坐标
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![如图,二次函数y=ax²+bx+c的图像交x轴于A(-1,0),B(2,0),交y轴于C(0,-2),作直线AC.(1)求二次函数的解析式;(20)点P在二次函数图象上,且PA=PC,求点P的坐标](/uploads/image/z/3141135-63-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax%26%23178%3B%2Bbx%2Bc%E7%9A%84%E5%9B%BE%E5%83%8F%E4%BA%A4x%E8%BD%B4%E4%BA%8EA%EF%BC%88-1%2C0%EF%BC%89%2CB%EF%BC%882%2C0%EF%BC%89%2C%E4%BA%A4y%E8%BD%B4%E4%BA%8EC%EF%BC%880%2C-2%EF%BC%89%2C%E4%BD%9C%E7%9B%B4%E7%BA%BFAC.%EF%BC%881%EF%BC%89%E6%B1%82%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%9B%2820%29%E7%82%B9P%E5%9C%A8%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%E4%B8%8A%2C%E4%B8%94PA%3DPC%2C%E6%B1%82%E7%82%B9P%E7%9A%84%E5%9D%90%E6%A0%87)
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