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4 years ago

Here are the first five terms of a sequence:

Mathematics

1 answer:

levacccp [35]4 years ago

3 0

Answer:

2n² + n + 1

Step-by-step explanation:

4, 11, 22, 37

Difference between: 7, 11, 15

7,11,15 are all 4 apart. You divide the 4 by 2 to get 2n² (it is squared because you needed a second level to find the difference)

And then I knew you needed to put the original 2n² with the sequence we are trying to work out.

2, 8, 18, 32

4, 11, 22, 37

difference between the 2 sequences 2, 3 ,4 ,5 (which all has a difference of 1) which means 1n or just n.

So that's 2n² + n

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4 years ago

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Answer:

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