the nth term of the following series (1×3)+(3×5)+(5×7)+(7×9)+.... will be

Question

m....mmjhs xx bhbbbjjjjhjjhhgggggggggggggggggvgv

Answer 1

This part is not helpful: m....mmjhs xx bhbbbjjjjhjjhhgggggggggggggggggvgv

 

Studying the series, you will recognize that the nth term has first factor 2n-1, and the second factor is 2n+1.

 

nth term is (2n-1)(2n+1).  Verify this by first setting n=1, then setting n=2, and so forth.  It works!