What are the first four terms of the sequence represented by the expression n(n - 1) — 5?
-7, -5, -3, 1
-5, -10, -15, -20
0, 2, 6, 12
-5, -3, 1, 7
-5, -3, 1, 7
To find the first four terms of the sequence represented by the expression n(n - 1) - 5, we need to substitute the values of n.
Let's calculate the expression for n = 1, 2, 3, and 4:
For n = 1: 1(1 - 1) - 5 = 0 - 5 = -5
For n = 2: 2(2 - 1) - 5 = 2 - 5 = -3
For n = 3: 3(3 - 1) - 5 = 6 - 5 = 1
For n = 4: 4(4 - 1) - 5 = 12 - 5 = 7
Therefore, the first four terms of the sequence represented by the expression n(n - 1) - 5 are -5, -3, 1, and 7. So, the correct option is:
-5, -3, 1, 7