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Multiple choice

The equation of the circle with centre ( 1,2 ) and tangent $ x + y - 5 = 0 $ is

  1. $

    x ^ { 2 } + y ^ { 2 } + 2 x - 4 y + 6 = 0

    $
  2. $

    x ^ { 2 } + y ^ { 2 } - 2 x - 4 y + 3 = 0

    $
  3. $

    x ^ { 2 } + y ^ { 2 } - 2 x + 4 y + 8 = 0

    $
  4. $

    x ^ { 2 } + y ^ { 2 } - 2 x - 4 y + 8 = 0

    $
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