1.已知二次函数的顶点在x轴上,且图像经过点(2,-2)与(-1,-8)求此函数的解析式.2.直线y=x-2与抛物线y=ax^2+bx+c相交于(2,m),(n,3)两点,若抛物线的对称轴是直线x=3,求抛物线的关系式.
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![1.已知二次函数的顶点在x轴上,且图像经过点(2,-2)与(-1,-8)求此函数的解析式.2.直线y=x-2与抛物线y=ax^2+bx+c相交于(2,m),(n,3)两点,若抛物线的对称轴是直线x=3,求抛物线的关系式.](/uploads/image/z/5323631-23-1.jpg?t=1.%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E9%A1%B6%E7%82%B9%E5%9C%A8x%E8%BD%B4%E4%B8%8A%2C%E4%B8%94%E5%9B%BE%E5%83%8F%E7%BB%8F%E8%BF%87%E7%82%B9%EF%BC%882%2C-2%EF%BC%89%E4%B8%8E%EF%BC%88-1%2C-8%EF%BC%89%E6%B1%82%E6%AD%A4%E5%87%BD%E6%95%B0%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F.2.%E7%9B%B4%E7%BA%BFy%3Dx-2%E4%B8%8E%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax%5E2%2Bbx%2Bc%E7%9B%B8%E4%BA%A4%E4%BA%8E%EF%BC%882%2Cm%29%2C%28n%2C3%29%E4%B8%A4%E7%82%B9%2C%E8%8B%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E6%98%AF%E7%9B%B4%E7%BA%BFx%3D3%2C%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%85%B3%E7%B3%BB%E5%BC%8F.)
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