Question

Write down the 2rd term in the sequence given by: T(n) = n2 - 5

Answer 1

I suspect you meant  T(n) = n^2 - 5; the " ^ " sign denotes exponentiation.

T(1) = 1^2 - 5 = 1 - 5 = - 4

T(2) = 2^2 - 5 = 4 - 5 = -1