关于x的一元二次方程x^2+px+q=0的两根同为负数,则A.p大于0且q小于0.B.p小于0且q大于0已知AB垂直DB于B点.CD垂直DB于点D,AB=6,CD=4,BD=14,问在DB上是否存在P点,使以C,D,P为顶点的三角形与P,B,A为顶点的三角
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![关于x的一元二次方程x^2+px+q=0的两根同为负数,则A.p大于0且q小于0.B.p小于0且q大于0已知AB垂直DB于B点.CD垂直DB于点D,AB=6,CD=4,BD=14,问在DB上是否存在P点,使以C,D,P为顶点的三角形与P,B,A为顶点的三角](/uploads/image/z/2754898-34-8.jpg?t=%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8Bx%5E2%2Bpx%2Bq%3D0%E7%9A%84%E4%B8%A4%E6%A0%B9%E5%90%8C%E4%B8%BA%E8%B4%9F%E6%95%B0%2C%E5%88%99A.p%E5%A4%A7%E4%BA%8E0%E4%B8%94q%E5%B0%8F%E4%BA%8E0.B.p%E5%B0%8F%E4%BA%8E0%E4%B8%94q%E5%A4%A7%E4%BA%8E0%E5%B7%B2%E7%9F%A5AB%E5%9E%82%E7%9B%B4DB%E4%BA%8EB%E7%82%B9.CD%E5%9E%82%E7%9B%B4DB%E4%BA%8E%E7%82%B9D%2CAB%3D6%2CCD%3D4%2CBD%3D14%2C%E9%97%AE%E5%9C%A8DB%E4%B8%8A%E6%98%AF%E5%90%A6%E5%AD%98%E5%9C%A8P%E7%82%B9%2C%E4%BD%BF%E4%BB%A5C%2CD%2CP%E4%B8%BA%E9%A1%B6%E7%82%B9%E7%9A%84%E4%B8%89%E8%A7%92%E5%BD%A2%E4%B8%8EP%2CB%2CA%E4%B8%BA%E9%A1%B6%E7%82%B9%E7%9A%84%E4%B8%89%E8%A7%92)
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