Ответ:

a−2−0,50145
\(\frac{a-2}{a+1}\)4−5−2−\(\frac{1}{2}\)\(\frac{2}{5}\)\(\frac{1}{2}\)

Ответ: 4; −5; −2; −\(\frac{1}{2}\); \(\frac{2}{5}\); \(\frac{1}{2}\).