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Find the radius of x2 plus y2-2x-18y equals -78?

Updated: 10/17/2024

Wiki User

∙ 14y ago

Best Answer

x2 + y2 - 2x - 18y = -78

x2 - 2x + 1 + y2 - 18y + 81 = 81 + 1 - 78

(x - 1)2 + (y - 9)2 = 4

(x - 1)2 + (y - 9)2 = 22

So the radius of the circle is 2, and it's center is located at the point (1, 9).

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∙ 14y ago

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