Rozlož na součin:
\large \Large \frac{4-y^{2}}{ \left( y^{2}-22y+121 \right) \cdot \left( 2+y \right) }\large
\large = \Large \frac{{2+y}}{{{{\left( {y-11} \right) }^2}}}\large
\large = \Large \frac{{4-y}}{{{{\left( {y-11} \right) }^2}}}\large
\large = \Large \frac{{2-y}}{{{{\left( {y+11} \right) }^2}}}\large
\large = \Large \frac{{2-y}}{{{{\left( {y-11} \right) }^2}}}\large