)如图,抛物线y=ax2+bx(a>0)经过原点O和点A(2,0). (1)写出抛物线的对称轴与x)如图,抛物线y=ax2+bx(a>0)经过原点O和点A(2,0).(1)写出抛物线的对称轴与x轴的交点坐标;(2)点
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![)如图,抛物线y=ax2+bx(a>0)经过原点O和点A(2,0). (1)写出抛物线的对称轴与x)如图,抛物线y=ax2+bx(a>0)经过原点O和点A(2,0).(1)写出抛物线的对称轴与x轴的交点坐标;(2)点](/uploads/image/z/3144861-45-1.jpg?t=%EF%BC%89%E5%A6%82%E5%9B%BE%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax2%2Bbx%EF%BC%88a%EF%BC%9E0%EF%BC%89%E7%BB%8F%E8%BF%87%E5%8E%9F%E7%82%B9O%E5%92%8C%E7%82%B9A%EF%BC%882%2C0%EF%BC%89%EF%BC%8E+%EF%BC%881%EF%BC%89%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%B8%8Ex%EF%BC%89%E5%A6%82%E5%9B%BE%2C%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dax2%2Bbx%EF%BC%88a%EF%BC%9E0%EF%BC%89%E7%BB%8F%E8%BF%87%E5%8E%9F%E7%82%B9O%E5%92%8C%E7%82%B9A%EF%BC%882%2C0%EF%BC%89%EF%BC%8E%EF%BC%881%EF%BC%89%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%E4%B8%8Ex%E8%BD%B4%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87%EF%BC%9B%EF%BC%882%EF%BC%89%E7%82%B9)
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