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Asked by Sahma

How do you find the nth term of the sequence: 5,14,29,50,77 I got 3n²+2+2. Is that correct?

Simply the answer is incorrect if you substitute n=1 for first term in your equation you’ll get 7 while it should be 5. The correct answer is as follows 5 14. 29. 50 First diff 9. 15. 21 Second diff is 6 for all So Quadratic series an^2+bn+c 2a =6 gives a=3 and 3a+b = 9 gives b=0 and a+b+c= 5 sub gives c= 2 Hence series is 3n^2 +2

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You were very close I think or you just typed the answer wrong by mistake, the correct answer is 3n^2+2

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Haider Ali Dar
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