1. Let f(x)= x^2 - 5 and g(x)= 3x^2. Find g(f(x)).
2. Let f(x)= x^2 - 4 and g(x)= -3x^2. Find f(g(x)).
g(f(x))=g(x^2-5)=3(x^2-5)^2
Expand and simplify.
Similar for #2.
2. Let f(x)= x^2 - 4 and g(x)= -3x^2. Find f(g(x)).
Expand and simplify.
Similar for #2.