Question

If tn=n²+n+1 then t₃−t₂ is equal to. explain step by step

3
4
5
6

Answer 1

t₃ - t₂ = 6

Explanation:

To evaluate t₃ and t₂ substitute t = 3, t = 2 into
`t_(n)`

t₃ = 3² + 3 + 1 = 9 + 3 + 1 = 13

t₂ = 2² + 2 + 1 = 4 + 2 + 1 = 7

Then

t₃ - t₂ = 13 - 7 = 6