document.write( "Question 420655: Having just taken a year of Algebra, Algebra II and College Algebra, my Statistics class is now using Summation, which was never covered in my algebra classes. One question which I do not understand is:
\n" ); document.write( "Why is: Sigma x^2 different from (Sigma x^2)? given the following values for x: 1,7,0,8, -6\r
\n" ); document.write( "\n" ); document.write( "The answer given me was non parenthesied answer is 150, parenthesied answer is 100. \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #293853 by stanbon(75887)\"\" \"About 
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Why is: Sigma x^2 different from (Sigma x^2)? given the following values for x: 1,7,0,8, -6
\n" ); document.write( "The answer given me was non parenthesied answer is 150, parenthesied answer is 100. \r
\n" ); document.write( "\n" ); document.write( "------
\n" ); document.write( "Sigma(x^2) = 1^2 + 7^2 + 0^2 + 8^2 + (-6)^2
\n" ); document.write( "= 1 + 49 + 0 + 64 + 36
\n" ); document.write( "= 50 + 100
\n" ); document.write( "= 150
\n" ); document.write( "-----
\n" ); document.write( "[Sigma(x)]^2 = [1 + 7 + 0 + 8 + -6]^2 = 10^2 = 100
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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