已知圆x2+y2+x-6y+m=0和直线x+2y-3=0交于P、Q两点,且以PQ为直径的圆恰过坐标原点,求实数m的值.
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![已知圆x2+y2+x-6y+m=0和直线x+2y-3=0交于P、Q两点,且以PQ为直径的圆恰过坐标原点,求实数m的值.](/uploads/image/z/5236474-58-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%86x2%2By2%2Bx%EF%BC%8D6y%2Bm%3D0%E5%92%8C%E7%9B%B4%E7%BA%BFx%2B2y%EF%BC%8D3%3D0%E4%BA%A4%E4%BA%8EP%E3%80%81Q%E4%B8%A4%E7%82%B9%2C%E4%B8%94%E4%BB%A5PQ%E4%B8%BA%E7%9B%B4%E5%BE%84%E7%9A%84%E5%9C%86%E6%81%B0%E8%BF%87%E5%9D%90%E6%A0%87%E5%8E%9F%E7%82%B9%2C%E6%B1%82%E5%AE%9E%E6%95%B0m%E7%9A%84%E5%80%BC%EF%BC%8E)
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