Question

Send help pls

Answer 1

do you see this is a cubic function?
the nth term is given as (n + 1)^3
we are doing the sum of a series the first SUM is 1 also the first term here
(n + 1)^3 = 1 which gives n = 0 so k = 0
so we are finding the sum of the series (k + 1)^3 from k = 0 to the nth term (n + 1)^3