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Vsevolod [243]
3 years ago
12

A circle has the equation x2+ 12x+y2 -8y = 73.

Mathematics
1 answer:
Gemiola [76]3 years ago
6 0

Step-by-step explanation:

x² + 12x + y² - 8y = 73

(x² + 12x + 36) + (y² - 8y + 16) = 73 + 36 + 16

(x + 6)² + (y - 4)² = 125.

Hence the coordinates of the center is (-6, 4).

Since (16 + 6)² + (-1 - 4)² = 22² + (-5)² = 509 and 509 is not equal to 125, (16, -1) does not lie on the circle.

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