f(x)=x^2+y^2

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Solution for f(x)=x^2+y^2 equation: 


Simplifying
f(x) = x2 + y2

Multiply f * x
fx = x2 + y2

Solving
fx = x2 + y2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = x + x-1y2

Simplifying
f = x + x-1y2

Reorder the terms:
f = x-1y2 + x

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