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Forums
Quadratic sequences

Quadratic sequences

Hi I need help asap!
i can't solve this quadratic!!
2. 6. 12. 20. 30. 42
+4. +4. +4. +4. +4
+2. +2. +2. +2

i think it starts with n^2 but now I'm stuck!!! I'm GCSE btw
please help!

Reply 1

Jai Sandhu

It is a very nice sequence.

The answer you are looking for is:

n^2 - n

o.e.

n(n-1)

Quick Reply

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