Question

solve.....................

Answer 1

$s |n| = {n}^{2} (n + 1)$
now., if n=1 ,,above expression will give sum of 1 term that is first term.
$s |1| = {1}^{2} (1 + 1) = 2 = a |1|$

now when n,=2 ,,expression will give sum of two terms,, I. e, first term (a|1|)+second term (a|2|)

$s |2| = {2}^{2} (2 + 1) = 12 \\ a |1| + a |2| = 12 \\ 2 + a |2| = 12 \\ a |2 | = 10$
so
first term =2
second term =12

mark as brainliest if helped

Answer 2

solve kel me...........