已知一元二次方程x^2-2x+m=0(1)若方程有两个实数根,求m的范围.(2)若方程的两个实数根为x1,x2,且x1+3x2=3,求m的值。
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![已知一元二次方程x^2-2x+m=0(1)若方程有两个实数根,求m的范围.(2)若方程的两个实数根为x1,x2,且x1+3x2=3,求m的值。](/uploads/image/z/177205-13-5.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8Bx%5E2-2x%2Bm%3D0%281%29%E8%8B%A5%E6%96%B9%E7%A8%8B%E6%9C%89%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%2C%E6%B1%82m%E7%9A%84%E8%8C%83%E5%9B%B4.%EF%BC%882%EF%BC%89%E8%8B%A5%E6%96%B9%E7%A8%8B%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%AE%9E%E6%95%B0%E6%A0%B9%E4%B8%BAx1%EF%BC%8Cx2%EF%BC%8C%E4%B8%94x1%2B3x2%3D3%2C%E6%B1%82m%E7%9A%84%E5%80%BC%E3%80%82)
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