x^2+y^2+8x-2ky+18=0

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Solution for x^2+y^2+8x-2ky+18=0 equation:


Simplifying
x2 + y2 + 8x + -2ky + 18 = 0

Reorder the terms:
18 + -2ky + 8x + x2 + y2 = 0

Solving
18 + -2ky + 8x + x2 + y2 = 0

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-18' to each side of the equation.
18 + -2ky + 8x + x2 + -18 + y2 = 0 + -18

Reorder the terms:
18 + -18 + -2ky + 8x + x2 + y2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -2ky + 8x + x2 + y2 = 0 + -18
-2ky + 8x + x2 + y2 = 0 + -18

Combine like terms: 0 + -18 = -18
-2ky + 8x + x2 + y2 = -18

Add '-8x' to each side of the equation.
-2ky + 8x + x2 + -8x + y2 = -18 + -8x

Reorder the terms:
-2ky + 8x + -8x + x2 + y2 = -18 + -8x

Combine like terms: 8x + -8x = 0
-2ky + 0 + x2 + y2 = -18 + -8x
-2ky + x2 + y2 = -18 + -8x

Add '-1x2' to each side of the equation.
-2ky + x2 + -1x2 + y2 = -18 + -8x + -1x2

Combine like terms: x2 + -1x2 = 0
-2ky + 0 + y2 = -18 + -8x + -1x2
-2ky + y2 = -18 + -8x + -1x2

Add '-1y2' to each side of the equation.
-2ky + y2 + -1y2 = -18 + -8x + -1x2 + -1y2

Combine like terms: y2 + -1y2 = 0
-2ky + 0 = -18 + -8x + -1x2 + -1y2
-2ky = -18 + -8x + -1x2 + -1y2

Divide each side by '-2y'.
k = 9y-1 + 4xy-1 + 0.5x2y-1 + 0.5y

Simplifying
k = 9y-1 + 4xy-1 + 0.5x2y-1 + 0.5y

Reorder the terms:
k = 4xy-1 + 0.5x2y-1 + 9y-1 + 0.5y

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