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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 3rd term of the sequence with general term n^{2} + 4
2. The 2nd term of the sequence with general term n^{2} -4
3. The 4th term of the sequence with general term 4n^{2}
4. The 1st term of the sequence with general term 60 -n^{2}

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

5. 3, 6, 11, 18, 27, 38...
6. -3, 0, 5, 12, 21, 32...
7. 4, 16, 36, 64, 100, 144...
8. 79, 76, 71, 64, 55, 44...