SOLUTION: The given pattern continues. Write down the nth term of the sequence suggested by the pattern. 0,2,6,12,20,... A) a n=n^2-n B) a n=2n-2 C) a n=4n-6 D) a n=2^n-1 -1 I have

Algebra ->  Sequences-and-series -> SOLUTION: The given pattern continues. Write down the nth term of the sequence suggested by the pattern. 0,2,6,12,20,... A) a n=n^2-n B) a n=2n-2 C) a n=4n-6 D) a n=2^n-1 -1 I have       Log On


   

Question 46786: The given pattern continues. Write down the nth term of the sequence suggested by the pattern.
0,2,6,12,20,...
A) a n=n^2-n
B) a n=2n-2
C) a n=4n-6
D) a n=2^n-1 -1
I have looked but am unable to understand how these patterns work. Please help!
Thanks!
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
0 -(+2)-> 2 -(+4)-> 6 -(+6)-> 12
1st term: 0
2nd term: 2
3rd term: 6
n%5E2+-+n
1st term: 1+-+1+=+0 TRUE
2nd term: 4+-+2+=+2 TRUE
3rd term: 9+-+3+=+6 TRUE