document.write( "Question 128979: 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 \n" ); document.write( "
Algebra.Com's Answer #94317 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
5N(N+1)^2
\n" ); document.write( ".5N(N^2+2N+1)
\n" ); document.write( ".5N^3+N^2+.5N
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