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c(-1,-4), d=6

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circle (−1, −4), d=6

Solution

(x+1)²+(y+4)²=9

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Circle Equation

(x−a)²+(y−b)²=r² is the circle equation with a radius r, centered at (a, b)

Find the radius: r=3

(x−a)²+(y−b)²=r²

Plug in (−1, −4), r=3

(x−(−1))²+(y−(−4))²=3²

Simplify

(x+1)²+(y+4)²=9

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

c(-1,-4), d=6

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