Question

Помогите срочно пожалуйста ​

Answer 1

$\displaystyle\bf\\\frac{a-2}{a^{2} +4} \\\\\\a=-1\\\\\\\frac{a-2}{a^{2} +4} =\frac{-1-2}{(-1)^{2} +4}=-\frac{3}{1+4} = -\frac{3}{5} =-0,6\\\\\\Otvet:B) \ -0,6\\\\\\2)\\\\\frac{a-1}{a^{2} +1} \\\\\\a=-2\\\\\\\frac{a-1}{a^{2} +1} =\frac{-2-1}{(-2)^{2} +1}=-\frac{3}{4+1} = -\frac{3}{5} =-0,6$