已知抛物线y=ax2+bx+c经过A,B,C三点,当x≥0时,其图象如图所示.求抛物线的解析式,写出抛物线的顶点坐标
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![已知抛物线y=ax2+bx+c经过A,B,C三点,当x≥0时,其图象如图所示.求抛物线的解析式,写出抛物线的顶点坐标](/uploads/image/z/3816277-61-7.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax2%2Bbx%2Bc%E7%BB%8F%E8%BF%87A%2CB%2CC%E4%B8%89%E7%82%B9%2C%E5%BD%93x%E2%89%A50%E6%97%B6%2C%E5%85%B6%E5%9B%BE%E8%B1%A1%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%EF%BC%8E%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%2C%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9D%90%E6%A0%87)
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