Question
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Find the center and radius of the circle represented by the equation below.
x, squared, plus, y, squared, plus, 2, x, plus, 4, y, minus, 20, equals, 0
x
2
+y
2
+2x+4y−20=
0
Center: left bracket(
,
right bracket)
Radius:
Center: (-1, -2)
Radius: √25 = 5