直线4X-3Y+0和圆X^平方+Y^平方-18X-45=0的位置关系是
人气：175 ℃ 时间：2020-06-06 01:16:49
解答
圆心为（9,0）,到直线的距离9/5,圆的半径为根号126,显然相离
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