If f(x)=-4x+2 and g(x)=√x-8. find (fog)(12)

Answer :

Solution:

Given;

[tex]f(x)=-4x+2,g(x)=\sqrt{x-8}[/tex][tex]\begin{gathered} (f\circ g)(x)=f(\sqrt{x-8}) \\ \\ f(\sqrt{x-8})=-4(\sqrt{x-8})+2 \end{gathered}[/tex][tex][/tex]