## Complex conjugate variables as independent variables in polynomial equations

Hi,
Is there any trick to treat complex conjugate variables in polynomial equations as independent variables by adding some other constraint equation ? Say, we have polynomial equation $f(x,x^{*},y,...) = 0$. where x^{*} is the complex conjugate of variable $x$. I might think of taking $x = r e^{i \alpha} =z_{1}$ and $x^{*} = r e^{-i \alpha} = z_{2}$ i.e. in polar form and then taking the original equation $f(z_{1},z_{2},y,...) = 0$ intersecting with $z_{1} z_{2} = 1$. But I don't know if this is the correct way - I am missing something here, right ?

Thanks in advance,

Cheers,

dm368
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