document.write( "Question 931199: The sum of two numbers is 9 and the sum of their squares is 261. Find the numbers \n" ); document.write( "
Algebra.Com's Answer #565488 by ewatrrr(24785)\"\" \"About 
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x + y = 9 0r y = \"9-x\"
\n" ); document.write( "....
\n" ); document.write( "(9-x)^2 + x^2 = 261
\n" ); document.write( "81 - 18x + x^2 + x^2 = 261
\n" ); document.write( "2x^2 - 18x - 180 = 0
\n" ); document.write( "x^2 - 9x - 90 = 0
\n" ); document.write( "(x+6)(x-15)= 0
\n" ); document.write( "x = 15 and y = -6
\n" ); document.write( "0r
\n" ); document.write( "x = -6 and y = 15
\n" ); document.write( "(15,-6) and (-6,15) solutions for this System
\n" ); document.write( "And..checking
\n" ); document.write( "225 + 36 = 261
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