已知抛物线y2=2px(p>0)的准线与圆x2+y2-6x-7=0相切,则p= .

已知抛物线y2=2px(p>0)的准线与圆x2+y2-6x-7=0相切,则p=　　　　.

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已知抛物线y2=2px(p>0)的准线与圆x2+y2-6x-7=0相切,则p= .

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