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 #94318 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\".5n%28n%2B1%29%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\".5n%5E3+%2B+n%5E2+%2B+.5n\"\r
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