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Quadratic sequences

Stuck? Read the notes

	Answers
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Find the given term of each of these sequences.

1. The 1st term of the sequence with general term n^{2} + 3
2. The 5th term of the sequence with general term n^{2} -1
3. The 3rd term of the sequence with general term 4n^{2}
4. The 4th term of the sequence with general term 30 -n^{2}

Work out an expression for the general term of these sequences.

5. 2, 5, 10, 17, 26, 37...
6. -1, 2, 7, 14, 23, 34...
7. 2, 8, 18, 32, 50, 72...
8. 69, 66, 61, 54, 45, 34...