Question

the sum of n terms of an ap is n^2-n then the end term will be​

Answer 1

Step-by-step explanation:

Sn= n^2-n

nth term = Sn-Sn-1

= (n^2-n ) - ((n-1) ^2-(n-1) )

= (n^2-n ) - ((n ^2- 2n +1 -n+1) )

= n^2 - n - n^2+3n-2

=2n-2

so end term = nth term= 2n-2