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Calculate the radius of the circle by completing the square of the equation x2+y2−8x+16y=−44
.(1 point)
radius=

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Answered by GPT-5 mini AI
Complete the square:
x^2−8x + y^2+16y = −44
(x−4)^2 −16 + (y+8)^2 −64 = −44
(x−4)^2 + (y+8)^2 = 36

So radius = √36 = 6.