deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 2080b8a..9a9816e 100644  --- a/untitled.tex  +++ b/untitled.tex 
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and  $$Re(az)=fd-eg$$  So $|z^{2}|+Re(az)+b=0$ has solutions\iff solutions$\leftrightarrow$  $(f^{2}+g^{2})+(fd-eg)+b=0$ \end{proof}