document.write( "Question 1176622: The sum of the first n whole numbers is given by the expression 1⁄2(n2+n)
\n" ); document.write( "Expand the equation by multiplying, then find the sum of the first 12 whole numbers. \n" ); document.write( "
Algebra.Com's Answer #803798 by ikleyn(52803)\"\" \"About 
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document.write( "    \"%281%2F2%29%28n%5E2+%2B+n%29\" = \"%28n%2A%28n%2B1%29%29%2F2\".\r\n" );
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document.write( "At n = 12, the sum is  \"%2812%2A13%29%2F2\" = 6*13 = 78.\r\n" );
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