Question

Find the first three terms of the sequence below.
Tn=n^2−n+4

Answer 1

Answer:

$t1 = {1}^{2} - 1 + 4 = 4$

$t2 = {2}^{2} - 2 + 4 = 6$

$t3 = {3}^{2} - 3 + 4 = 10$

Common difference

$a2 - a1 = 6 - 4 = 2$

$a3 - a2 = 10 - 6 = 4$

This is not A.P