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[" If the tangent at "(3,-4)" to the "],...

[" If the tangent at "(3,-4)" to the "],[" circle "x^(2)+y^(2)-4x+2y-5=0" cuts "],[" the circle "x^(2)+y^(2)+16x+2y+10=0],[" in "A" and "B" then the midpoint of "],[AB" is "]

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