Math, asked by ishuk6658, 1 year ago

The nth term of a progression is (n2 -n-1). Prove that it is an ap

Answers

Answered by kartik2507
0

a1 = 1^2 - 1 - 1 = -1

a2 = 2^2 - 2 - 1 = 1

a3 = 3^2 - 3 - 1 = 5

a4 = 4^2 - 4 - 1 = 11

it is not in AP

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