3 years ago

REALLY NEED HELP, PLEASE HELP ME

Mathematics

1 answer:

sveta [45]3 years ago

6 0

x^2 + y^2 -8x -6y +21 = 0

centre = -(-8)/2, -(-6)/2

= 4, 3

radius = √(4^2) + 3^2 - 21

= √(16 +9 -21)

= √(25 -21)

= √4

= 2

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