Which expression best represents the following pattern?

Question

Step 1 = 0 Squares

Step 2 = 3 Squares

Step 3 = 8 Squares

Possible Answers ⬇️:

A. n^2 + 1

B. n^2 - 1

C. n^2 + n

D. n^2 - n

Answer 1

B) n^2 -1

1^2 - 1 = 0

2^2 - 1 = 3

3^2 -1 = 8