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

Hi! I can help you with that. The expression n(n-1)-4 represents a sequence. To find the first four terms of the sequence, we need to substitute different values of n into the expression and evaluate it.

Let's substitute n = 1 into the expression:
1(1-1)-4 = 0-4 = -4
So, the first term of the sequence is -4.

Now, let's substitute n = 2:
2(2-1)-4 = 2-4 = -2
The second term of the sequence is -2.

Next, let's substitute n = 3:
3(3-1)-4 = 3-4 = -1
The third term of the sequence is -1.

Finally, let's substitute n = 4:
4(4-1)-4 = 12-4 = 8
The fourth term of the sequence is 8.

Therefore, the first four terms of the sequence represented by the expression n(n-1)-4 are -4, -2, -1, and 8.

huh? Just plug in the values 1..4 for n:

a1 = 1(1-1)-4 = -4
a2 = 2(2-1)-4 = -2
...