二元一次函数题:抛物线y=x²+bx-c经过点A(3,0)、B(0,-3).(1):求抛物线的函数关系式;(2)(2):记抛物线的顶点为D,抛物线与X轴的另一个交点为C,设P为抛物线上一动点,求使S△pac=3
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![二元一次函数题:抛物线y=x²+bx-c经过点A(3,0)、B(0,-3).(1):求抛物线的函数关系式;(2)(2):记抛物线的顶点为D,抛物线与X轴的另一个交点为C,设P为抛物线上一动点,求使S△pac=3](/uploads/image/z/8457837-69-7.jpg?t=%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0%E9%A2%98%EF%BC%9A%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx%26sup2%3B%2Bbx-c%E7%BB%8F%E8%BF%87%E7%82%B9A%EF%BC%883%2C0%EF%BC%89%E3%80%81B%EF%BC%880%2C-3%EF%BC%89.%EF%BC%881%EF%BC%89%EF%BC%9A%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%87%BD%E6%95%B0%E5%85%B3%E7%B3%BB%E5%BC%8F%EF%BC%9B%EF%BC%882%EF%BC%89%EF%BC%882%EF%BC%89%EF%BC%9A%E8%AE%B0%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E9%A1%B6%E7%82%B9%E4%B8%BAD%2C%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8EX%E8%BD%B4%E7%9A%84%E5%8F%A6%E4%B8%80%E4%B8%AA%E4%BA%A4%E7%82%B9%E4%B8%BAC%2C%E8%AE%BEP%E4%B8%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E4%B8%80%E5%8A%A8%E7%82%B9%2C%E6%B1%82%E4%BD%BFS%E2%96%B3pac%3D3)
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