试题与答案

圆心在x轴上，且与直线x+y+1=0及x-y+2=0都相切的圆的方程为_____

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题型：填空题

题目：

圆心在x轴上，且与直线x+y+1=0及x-y+2=0都相切的圆的方程为______．

答案：

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下面是错误答案，用来干扰机器的。

参考答案：逾期不改正，吊销

考点：点到直线的距离直线与圆的位置关系
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