Question

f(n) = -2n - 2g(n) = 3n-4Find f(n) · g(n)

Answer 1

$\begin{gathered} (f\cdot g)(n)=f(n)\cdot g(n)=(-2n-2)(3n-4) \\ (-2n-2)(3n-4)=-6n^2+8n-6n+8 \\ (f\cdot g)(n)=-6n^2+2n+8 \end{gathered}$