Question

find the nth term and sum of n term of following series: 1.3+3.5+5.7+7.9......​

Answer 1

Answer:

n.n+2

Step-by-step explanation:

as the difference

Answer 2

Hey

Given :-

Series :-

1.3+3.5+5.7+7.9......

nth term :-

(2n - 1)(2n+1)

sum of n terms :-

n(4n^2 + 6n - 1) / 3