Spo�t�te tyto limity:
$$
\lim_{y \to +\infty}\frac{(y+2)^{y+2}(y+3)^{y+3}}{(y+5)^{y+5}},
\qquad
\lim_{x \to 0}\frac{\sin^2 x}{\root 5 \of {1+5x} -1 -x}.
$$
