Question

In the nth term of an arithmetic progression is un^2-1 then the 8th term is

Answer 1

Step-by-step explanation:

what is un write it's meaning...

for 8th term use a8=a+7d

Answer 2

Answer:

63

Step-by-step explanation:

Given, T(n) = n² - 1.......(1)

Putting n = 8 in (1) we get

T(8) = 8th term = 8² - 1 = 64 - 1 = 63

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