SOLUTION: I know how to do these I really just need to be refreshed the question I am having trouble with is .5n(n+1)to the second power

SOLUTION: I know how to do these I really just need to be refreshed the question I am having trouble with is .5n(n+1)to the second power

Algebra.Com

Question 128980:
I know how to do these I really just need to be refreshed the question I am having trouble with is .5n(n+1)to the second power
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
.5N(N+1)^2
.5N(N^2+2N+1)
.5N^3+N^2+.5N
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