What is (x+9)^2+(y-8)^2=81 ?

The solution to (x+9)^2+(y-8)^2=81 is Circle with (a,b)=(-9,8),r=9

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(x+9)^2+(y-8)^2=81

(x + 9)^{2} + (y - 8)^{2} = 81

(a, b) = (- 9, 8), r = 9

Solution steps

(x + 9)^{2} + (y - 8)^{2} = 81

Rewrite

(x + 9)^{2} + (y - 8)^{2} = 81

in the form of the standard circle equation

(x - (- 9))^{2} + (y - 8)^{2} = 9^{2}

Therefore the circle properties are:

(a, b) = (- 9, 8), r = 9

x, x^{2} + Y (x)^{2} = 100 + 5 Y

2 x^{2} + 2 y^{2} + 12 x - 8 y + 14 = 0

x^{2} + y^{2} + 6 x - 12 y + 40 = 0

(x + 9)^{2} + (y - 8)^{2} = 64

x^{2} + y^{2} + 10 x - 20 = 0

What is (x+9)^2+(y-8)^2=81 ?
The solution to (x+9)^2+(y-8)^2=81 is Circle with (a,b)=(-9,8),r=9