JEE Advance - Mathematics (1980 - No. 21)
A square is inscribed in the circle $${x^2} + {y^2} - 2x + 4y + 3 = 0$$. Its sides are parallel to the coordinate axes. The one vertex of the square is
$$\left( {1 + \sqrt {2,} - 2} \right)$$
$$\,\left( {1 - \sqrt {2}, - 2} \right)$$
$$\,\,\left( {1, - 2 + \sqrt 2 } \right)$$
none of these
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