If `3^(k+1)-3^(k)=m`, what is `3^(k+2)` in terms of m?

if 10^(k-3)=m, then 10^(k)=

The difference between the sum of the first k terms of the series 1^(3)+2^(3)+3^(3)+...+n^(3) and the sum of the first k terms of 1+2+3+....+n is 1980. The value of k is :

The difference between the sum of the first k terms of the series 1^(3)+2^(3)+3^(3)+...+n^(3) and the sum of the first k terms of 1+2+3+...+n is 1980. The value of k is

If (k - 3), (2k + 1) and (4k + 3) are three consecutive terms of an A.P., find the value of k.

The difference between the sum of the first k terms of the series 1^3+2^3+3^3+.......+n^3 and the sum of the first k terms of 1+2+3+.......+n is 1980. The value of k is __________.

The difference between the sum of the first k terms of the series 1^3+2^3+3^3++n^3 and the sum of the first k terms of 1+2+3++ni s1980. The value of k is __________.

The difference between the sum of the first k terms of the series 1^3+2^3+3^3+.......+n^3 and the sum of the first k terms of 1+2+3+.......+n is 1980. The value of k is __________.