Question

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Answer 1

Answer:

(c) n² - 4n + 3

Step-by-step explanation:

an = n² - 1

: an - 2 = (n - 2)² - 1

= n² - 4n + 4 - 1

= n² - 4n + 3

Hence,

option (c) is correct

Answer 2

Answer:

C

Step-by-step explanation:

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