\[
\boxed{
 \left\{ t{\frac {\rm d}{{\rm d}t}}x \left( t \right) +2\,x \left( t \right) -2\,y \left( t \right) =t,t{\frac {\rm d}{{\rm d}t}}y \left( t \right) +x \left( t \right) +5\,y \left( t \right) ={t}^{2} \right\} }
\]