Question

3. What are the first four terms of the sequence represented by the expression n(n-1) - 4?

-2, 2, 6, 10
-3,0,3,6
-4,-2, 2, 8
-5,-4,-2,6

Answer 1

-4, -2, 2, 8

Explanation:

The first four terms will be found by evaluating the expression for values of n that are 1, 2, 3, 4. Evaluating for n=1 is sufficient to determine the correct answer choice:

n(n -1) -4

1(1 -1) -4 = -4 . . . . matches the third choice