Question

What are the first four terms of the sequence represented by the expression n(n-1) - 5?
A) -7,-5,-3,1
B) -5,-10,-15,-20
C) 0,2,6,12
D) -5,-3,1,7

Answer 1

using the equation n(n-1) - 5
it would be B) -5, -10, -15, -20 because if u add -5 like the equation and start with -5 B. is your answer
hope this helps,
QueenofLovers123

Answer 2

plug 1 for n to get the first term

1(1-1)-5
1-1-5
0-5
-5
now 2 for n
2(2-1)-5
4-2-5
2-5
-3

again do the same
therefore answer is D