If the normals of the parabola y2=4x drawn at the end points of its latus rectum are tangents to the circle (x-3)2+(y+2)2=r2, then the value of r2 is
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If the normals of the parabola y2=4x drawn at the end points of its latus rectum are tangents to the circle (x−3)2+(y+2)2=r2, then the value of r2 is