Question

The sum of the first n terms of an AP is given by 7n² - 3n. Find the AP.

Answer 1

Step-by-step explanation:

here it is......watch it carefully

Answer 2

Answer:

Step-by-step explanation:

as the nth term is given : 7n^2-3n

then the AP will be

case(i): n=1

=7(1)^2 - 3(1)

=7-3

=4

case(ii): n=2

=7(2)^2 - 3(2)

=7(4)-6

=28-6

=22

case(iii): n=3

=7(3)^2 - 3(3)

=7(9)-9

=63-9

=54

therefore the AP will be :

4 , 22 , 54 ,..........