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Find the equation of the circle with centre (–a, –b) and radius √a^2−b^2.

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asked Feb 9, 2018 by Rohit Singh (61,782 points) ● 35 ● 133 ● 356

Find the equation of the circle with centre (–a, –b) and radius √a2−b2.

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answered Feb 9, 2018 by sameer (82,980 points) ● 5 ● 11 ● 37

The equation of a circle with centre (h, k) and radius r is given as
(x – h)2 + (y – k)2 = r2
It is given that centre (h, k) = (–a, –b) and radius (r) =√2−2 .
Therefore, the equation of the circle is

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