document.write( "Question 259557: the area of a square, expressed in square inches, is 165 in inches greater than its perimeter, expressed in inches. what is the length of a side of the square? \n" ); document.write( "
Algebra.Com's Answer #191472 by ankor@dixie-net.com(22740)\"\" \"About 
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the area of a square, expressed in square inches, is 165 in inches greater than its perimeter, expressed in inches.
\n" ); document.write( "what is the length of a side of the square?
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\n" ); document.write( "Area = x^2
\n" ); document.write( "Perimeter = 4x
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\n" ); document.write( "x^2 - 4x = 165
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\n" ); document.write( "x^2 - 4x - 165 = 0; our old friend, the quadratic equation!
\n" ); document.write( "Factor
\n" ); document.write( "(x - 15)(x + 11) = 0
\n" ); document.write( "Positive solution is what we want here
\n" ); document.write( "x = 15 is the length of the square
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\n" ); document.write( "Is this true?
\n" ); document.write( "15^2 - 4(15) =
\n" ); document.write( "225 - 60 = 165 \n" ); document.write( "
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