抛物线y=x2+bx+c与x轴交于点A(-1,0),点B(3,0)两点(1)求该抛物线的解析式(2)设(1)中的抛物线上有一动点P,当点P在抛物线上滑动到什么位置时,满足S△PAB=8,并求此时P点的坐标(3)设(1)中
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![抛物线y=x2+bx+c与x轴交于点A(-1,0),点B(3,0)两点(1)求该抛物线的解析式(2)设(1)中的抛物线上有一动点P,当点P在抛物线上滑动到什么位置时,满足S△PAB=8,并求此时P点的坐标(3)设(1)中](/uploads/image/z/10110106-10-6.jpg?t=%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx2%2Bbx%2Bc%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8E%E7%82%B9A%28-1%2C0%29%2C%E7%82%B9B%283%2C0%29%E4%B8%A4%E7%82%B9%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%882%EF%BC%89%E8%AE%BE%EF%BC%881%EF%BC%89%E4%B8%AD%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E6%9C%89%E4%B8%80%E5%8A%A8%E7%82%B9P%2C%E5%BD%93%E7%82%B9P%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E6%BB%91%E5%8A%A8%E5%88%B0%E4%BB%80%E4%B9%88%E4%BD%8D%E7%BD%AE%E6%97%B6%2C%E6%BB%A1%E8%B6%B3S%E2%96%B3PAB%3D8%2C%E5%B9%B6%E6%B1%82%E6%AD%A4%E6%97%B6P%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%EF%BC%883%EF%BC%89%E8%AE%BE%EF%BC%881%EF%BC%89%E4%B8%AD)
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