ANSWER
[tex](f\circ g)(x) = - 8 {x}^{2} + 4[/tex]
EXPLANATION
Given f(x)=-8x+4
and
g(x)=x²
We want to find find an expression for;
[tex]
(f\circ g)(x) = f(g(x))[/tex]
[tex]
(f\circ g)(x) = f( {x}^{2} )[/tex]
We substitute x² into f(x)=-8x+4
This will give us:
[tex]
(f\circ g)(x) = - 8 {x}^{2} + 4[/tex]
