Question

if f(x) = 8 – x / x² — 2' then f(–2) =

Answer 1

$f(x)=\frac{8-x}{x^2-2}$

we replace x=-2

so

$\begin{gathered} f(-2)=\frac{8-(-2)}{(-2)^2-2} \\ \end{gathered}$

now solve

$\begin{gathered} \frac{8+2}{4-2} \\ \\ \frac{10}{2}=5 \end{gathered}$

the solution is 5