Mathematics for IGCSE & O level - Sequences (Section 3 - No. 38) | ExamPlay

Mathematics for IGCSE & O level - Sequences (Section 3 - No. 38)

What are the first three terms of the sequence defined by a_n = n² - 2?

-1

2

7

14

Explanation

Substitute n = 1, 2, 3 into a_n = n² - 2

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