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Rik Lewis · Answer 1 · 2018-08-01T19:20:48+0000

the equation of a circle is defined by (x – h)² + (y – k)² = r² with the center being at (h, k) and with radius r. so we plug in (-2, 1) and r=3 and we get:
(x+2)² + (y – 1)² = 9. Hope that helps.

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