Additional Mathematics – Functions | e-Consult

First compute the individual values at \(x=2\):

• \(f(2)=2^{2}-1=3\)
• \(g(2)=3(2)+2=8\)

1. \((fg)(2)=f(2)\times g(2)=3\times 8=24\).

2. \((gf)(2)=g(2)\times f(2)=8\times 3=24\). The product is commutative, so \((fg)(2)=(gf)(2)=24\).