Asked by Anonymous
What is the formula for the nth term of this sequence:
2, 6, 12, 20...
2, 6, 12, 20...
Answers
Answered by
Bosnian
2 , 6 , 12 , 20...
n = 1
a1 = 2 = 1 + 1 = 1 ^ 2 + 1 = n ^ 2 + n
n = 2
a2 = 6 = 4 + 2 = 2 ^ 2 + 2 = n ^ 2 + n
n = 3
a3 = 12 = 9 + 3 = 3 ^ 2 + 3 = n ^ 2 + n
n = 4
a3 = 20 = 16 + 4 = 4 ^ 2 + 4 = n ^ 2 + n
an = n ^ 2 + n
n = 1
a1 = 2 = 1 + 1 = 1 ^ 2 + 1 = n ^ 2 + n
n = 2
a2 = 6 = 4 + 2 = 2 ^ 2 + 2 = n ^ 2 + n
n = 3
a3 = 12 = 9 + 3 = 3 ^ 2 + 3 = n ^ 2 + n
n = 4
a3 = 20 = 16 + 4 = 4 ^ 2 + 4 = n ^ 2 + n
an = n ^ 2 + n
Answered by
sandara
what are the next 2 term of the arithmetic sequence below
6,12,18, , ,
6,12,18, , ,
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