z=x^2+y^2-4xy

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Solution for z=x^2+y^2-4xy equation: 


Simplifying
z = x2 + y2 + -4xy

Reorder the terms:
z = -4xy + x2 + y2

Solving
z = -4xy + x2 + y2

Solving for variable 'z'.

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

Simplifying
z = -4xy + x2 + y2

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