X^2+2xy+y^2+8+x^2+y^2+-xy-21=0

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Solution for X^2+2xy+y^2+8+x^2+y^2+-xy-21=0 equation:


Simplifying
X2 + 2xy + y2 + 8 + x2 + y2 + -1xy + -21 = 0

Reorder the terms:
8 + -21 + X2 + 2xy + -1xy + x2 + y2 + y2 = 0

Combine like terms: 8 + -21 = -13
-13 + X2 + 2xy + -1xy + x2 + y2 + y2 = 0

Combine like terms: 2xy + -1xy = 1xy
-13 + X2 + 1xy + x2 + y2 + y2 = 0

Combine like terms: y2 + y2 = 2y2
-13 + X2 + 1xy + x2 + 2y2 = 0

Solving
-13 + X2 + 1xy + x2 + 2y2 = 0

Solving for variable 'X'.

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

Add '13' to each side of the equation.
-13 + X2 + 1xy + x2 + 13 + 2y2 = 0 + 13

Reorder the terms:
-13 + 13 + X2 + 1xy + x2 + 2y2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + X2 + 1xy + x2 + 2y2 = 0 + 13
X2 + 1xy + x2 + 2y2 = 0 + 13

Combine like terms: 0 + 13 = 13
X2 + 1xy + x2 + 2y2 = 13

Add '-1xy' to each side of the equation.
X2 + 1xy + x2 + -1xy + 2y2 = 13 + -1xy

Reorder the terms:
X2 + 1xy + -1xy + x2 + 2y2 = 13 + -1xy

Combine like terms: 1xy + -1xy = 0
X2 + 0 + x2 + 2y2 = 13 + -1xy
X2 + x2 + 2y2 = 13 + -1xy

Add '-1x2' to each side of the equation.
X2 + x2 + -1x2 + 2y2 = 13 + -1xy + -1x2

Combine like terms: x2 + -1x2 = 0
X2 + 0 + 2y2 = 13 + -1xy + -1x2
X2 + 2y2 = 13 + -1xy + -1x2

Add '-2y2' to each side of the equation.
X2 + 2y2 + -2y2 = 13 + -1xy + -1x2 + -2y2

Combine like terms: 2y2 + -2y2 = 0
X2 + 0 = 13 + -1xy + -1x2 + -2y2
X2 = 13 + -1xy + -1x2 + -2y2

Simplifying
X2 = 13 + -1xy + -1x2 + -2y2

Reorder the terms:
-13 + X2 + xy + x2 + 2y2 = 13 + -1xy + -1x2 + -2y2 + -13 + xy + x2 + 2y2

Reorder the terms:
-13 + X2 + xy + x2 + 2y2 = 13 + -13 + -1xy + xy + -1x2 + x2 + -2y2 + 2y2

Combine like terms: 13 + -13 = 0
-13 + X2 + xy + x2 + 2y2 = 0 + -1xy + xy + -1x2 + x2 + -2y2 + 2y2
-13 + X2 + xy + x2 + 2y2 = -1xy + xy + -1x2 + x2 + -2y2 + 2y2

Combine like terms: -1xy + xy = 0
-13 + X2 + xy + x2 + 2y2 = 0 + -1x2 + x2 + -2y2 + 2y2
-13 + X2 + xy + x2 + 2y2 = -1x2 + x2 + -2y2 + 2y2

Combine like terms: -1x2 + x2 = 0
-13 + X2 + xy + x2 + 2y2 = 0 + -2y2 + 2y2
-13 + X2 + xy + x2 + 2y2 = -2y2 + 2y2

Combine like terms: -2y2 + 2y2 = 0
-13 + X2 + xy + x2 + 2y2 = 0

The solution to this equation could not be determined.

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