Mathematics · Circles
What is the equation of a circle whose radius is 4 and which is concentric with the circle x2 + y2 + 2x − 6y = 0?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1x2 + y2 + 2x + 6y + 6 = 0
- 2x2 + y2 + 2x − 6y − 6 = 0✓
- 3x2 + y2 − 2x + 6y = 0
- 4x2 + y2 + 6x − 2y + 6 = 0
Correct answer
x2 + y2 + 2x − 6y − 6 = 0
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