document.write( "Question 902585: Ahmad wants to create a rectangular garden in a backyard. He wants it to have a total area of 120 square feet, and it should be 12 feet longer than its wide. By using completing the square method, what dimensions should he use for the garden? Give your answer in 3 significant figures. \n" ); document.write( "
Algebra.Com's Answer #547382 by Jc0110(165)\"\" \"About 
You can put this solution on YOUR website!
Let width = x.
\n" ); document.write( "Length = 12 + width
\n" ); document.write( "Length = 12 + x
\n" ); document.write( "width x length = area of rectangular garden
\n" ); document.write( "X x (12 + x) = 120
\n" ); document.write( "12x + \"x%5E2\" = 120\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Completing the square:
\n" ); document.write( " ... Take note that the whole \"PLUS_MINNUS-\" is actually . Sorry because I can't type into the equation.\r
\n" ); document.write( "\n" ); document.write( "\"x%2B6=sqrt%28156%29\" or \"x%2B6=-sqrt%28156%29\"
\n" ); document.write( "\"x=sqrt%28156%29-6\" or \"x=-sqrt%28156%29-6\"
\n" ); document.write( "\"x=6.49\" or \"x=-18.5\"
\n" ); document.write( "\"x=6.49\" is acceptable, while \"x=-18.5\" is unacceptable since dimensions of an object cannot be in negative.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Dimensions of the rectangular garden:
\n" ); document.write( "Width = x = 6.49 ft
\n" ); document.write( "Length = 12 + x
\n" ); document.write( "Length = 12 + 6.49
\n" ); document.write( "Length = 18.49 ft
\n" ); document.write( "
\n" );