As given by the question
There are given that function
[tex]r(x)=\frac{7}{x-2}[/tex]
Now,
To find the value of r(a^2), put x = a^2 into the function
Then,
[tex]\begin{gathered} r(x)=\frac{7}{x-2} \\ r(a^2)=\frac{7}{a^2-2} \end{gathered}[/tex]
Hence, the function is shown below:
[tex]r(a^2)=\frac{7}{a^2-2}[/tex]
