Write and algebraic expression for the verbal description

Question

The product of 2 consecutive natural numbers, the first of which is n

Answer 1

Eric, this simple algebra problem has nothing to do with Trig!

But here's how to do it, anyway.

Let the first number be n. Then, the second number is n + 1.

The product of the 2 is just n(n + 1).

The question is silent on whether this equals any specific result, so must leave it there.