z=x^2+y^2-2*x-4*Sqrt[xy]-2*y+8

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Solution for z=x^2+y^2-2*x-4*Sqrt[xy]-2*y+8 equation: 


Simplifying
z = x2 + y2 + -2x + -4Sqrt[xy] + -2y + 8

Multiply qrtS * xy
z = x2 + y2 + -2x + -4qrtxyS + -2y + 8

Reorder the terms:
z = 8 + -4qrtxyS + -2x + x2 + -2y + y2

Solving
z = 8 + -4qrtxyS + -2x + x2 + -2y + y2

Solving for variable 'z'.

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

Simplifying
z = 8 + -4qrtxyS + -2x + x2 + -2y + y2

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