October 2018 1 20 Report

rozwiąż jedno z poniższych równań :)

\left \{ {{(x-3)^2+3y(y+1)=3(y+1)(y-1)+x^2} \atop {(x-3)(1-x)=-\frac{1}{2}(2x^2-y)}} \right.

\left \{ {{\frac{2x-y-17}{2}=\frac{2x+3y}{3}} \atop {2x-y=11}} \right.


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