已知:二次函数y=ax^2+bx+c经过A(-1,0)B(3,0)C(0,-3) (1)求二次函数解析式 (2)在抛物线上有一动点P已知:二次函数y=ax^2+bx+c经过A(-1,0)B(3,0)C(0,-3)(1)求二次函数解析式(2)在抛物线上有一动
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![已知:二次函数y=ax^2+bx+c经过A(-1,0)B(3,0)C(0,-3) (1)求二次函数解析式 (2)在抛物线上有一动点P已知:二次函数y=ax^2+bx+c经过A(-1,0)B(3,0)C(0,-3)(1)求二次函数解析式(2)在抛物线上有一动](/uploads/image/z/3972696-24-6.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%9A%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax%5E2%2Bbx%2Bc%E7%BB%8F%E8%BF%87A%EF%BC%88-1%2C0%EF%BC%89B%283%2C0%29C%280%2C-3%29+%EF%BC%881%29%E6%B1%82%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E8%A7%A3%E6%9E%90%E5%BC%8F+%EF%BC%882%EF%BC%89%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E6%9C%89%E4%B8%80%E5%8A%A8%E7%82%B9P%E5%B7%B2%E7%9F%A5%EF%BC%9A%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax%5E2%2Bbx%2Bc%E7%BB%8F%E8%BF%87A%EF%BC%88-1%2C0%EF%BC%89B%283%2C0%29C%280%2C-3%29%EF%BC%881%29%E6%B1%82%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%882%EF%BC%89%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E6%9C%89%E4%B8%80%E5%8A%A8)
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