We are asked to evaluate a functional expression on the variable "n" for n = 2
The expression is given as:
g(n) = 2 n^2 - 4
Then evaluating it at n = 2 we replace all instances of "n" with "2", and get:
g(2) = 2 (2)^2 - 4
g(2) = 2 * 4 - 4
g(2) = 8 - 4 = 4
g(2) = 4
