若圆C:x^2+y^2-2x+(m-4/m-2)y-m-3=0的圆心在X轴上,求1.(x-4)^2+y^2的最值2.若经过点P(2,1)的直线l与圆C交于AB两点,求 AB绝对值的取值范围打错了题目是 C:x^2+y^2-2x+(m-1/m-2)y-m-3=0的圆心在X轴上
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![若圆C:x^2+y^2-2x+(m-4/m-2)y-m-3=0的圆心在X轴上,求1.(x-4)^2+y^2的最值2.若经过点P(2,1)的直线l与圆C交于AB两点,求 AB绝对值的取值范围打错了题目是 C:x^2+y^2-2x+(m-1/m-2)y-m-3=0的圆心在X轴上](/uploads/image/z/12948040-64-0.jpg?t=%E8%8B%A5%E5%9C%86C%EF%BC%9Ax%5E2%2By%5E2-2x%2B%28m-4%2Fm-2%29y-m-3%3D0%E7%9A%84%E5%9C%86%E5%BF%83%E5%9C%A8X%E8%BD%B4%E4%B8%8A%2C%E6%B1%821.%EF%BC%88x-4%29%5E2%2By%5E2%E7%9A%84%E6%9C%80%E5%80%BC2.%E8%8B%A5%E7%BB%8F%E8%BF%87%E7%82%B9P%EF%BC%882%2C1%EF%BC%89%E7%9A%84%E7%9B%B4%E7%BA%BFl%E4%B8%8E%E5%9C%86C%E4%BA%A4%E4%BA%8EAB%E4%B8%A4%E7%82%B9%2C%E6%B1%82+AB%E7%BB%9D%E5%AF%B9%E5%80%BC%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%89%93%E9%94%99%E4%BA%86%E9%A2%98%E7%9B%AE%E6%98%AF+C%EF%BC%9Ax%5E2%2By%5E2-2x%2B%28m-1%2Fm-2%29y-m-3%3D0%E7%9A%84%E5%9C%86%E5%BF%83%E5%9C%A8X%E8%BD%B4%E4%B8%8A)
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