REALLY NEED HELP, PLEASE HELP ME
1 answer:
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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The answer is 9 1/2 - 1 6/7 = 4 1/8 hoped this helped
