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What is the standard form of the equation of a circle given by x2 + y2 – 18x + 8y + 5 = 0?

What is the standard form of the equation of a circle given by x2 + y2 – 18x + 8y + 5 = 0?
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4 votes
What is the standard form of the equation of a circle given by x2 + y2 – 18x + 8y + 5 = 0?

User FrickeFresh
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2 Answers

5 votes
x²-18x+81 + y²+8y+16 = -5+81+16=92
(x-9)² + (y+4)² = (2✓23)²

circle centered at (9,-4) with radius 2✓23
User JSWork
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8.7k points
3 votes
the guy who answered is right but the radius is 92
User Anthony De Smet
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7.9k points
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