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Show that the circle x^(2) +y^2) - 6x ...

Show that the circle
`x^(2) +y^2) - 6x -2y + 1 = 0, `
` x^(2) + y^(2) + 2x - 8y + 13 = 0` touch each
other. Find the point of contact and the
equation of common tangent at their
point of contact.

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