Question

( а+1/2+2)*1/а+1 при а=
-5

Answer 1

$(\frac{a^{2} }{a} + \frac{1}{a} + \frac{2a}{a} )*\frac{1}{a+1} \\(\frac{a^{2}+2a + 1 }{a} )*\frac{1}{a+1}$

$\frac{16}{-5} *\frac{1}{-4} =\frac{4}{5}$ = 0,8