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)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |