$\left\{\begin{matrix} |x^2+y^2-2xy+3x-2y-1|+4=2x-|x^2-3x+2|&&\\x^2+2y^2+79z^2=1997&&\end{matrix}\right.$
$\left\{\begin{matrix} |x^2+y^2-2xy+3x-2y-1|+4=2x-|x^2-3x+2|&&\\x^2+2y^2+79z^2=1997&&\end{matrix}\right.$
Started By dorabesu, 26-01-2013 - 21:38
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Posted 26-01-2013 - 21:38
dorabesu
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