Question

given functions...pls. compute for:
a) (fog)(x) b) (fog)(-2)
1.) f(x)=x2-2;g(x)=x3

Answer 1

\[f\circ g(x)=f(g(x))=f(x^3)=(x^3)^2-2=x^6-2\]

Answer 2

so
\[f\circ g(-2)=(-2)^6-2=64-2=62\]