50) \(\frac{p+3}{p+4}+\frac{p+2}{p+3}\)

\(\frac{(p+3)^2+(p+2)(p+4)}{(p+4)(p+3)}=\frac{2p^2+12p+17}{(p+4)(p+3)}\).

Ответ: \(\frac{2p^2+12p+17}{(p+4)(p+3)}\).