document.write( "Question 247862: The length of a rectangle is three meters longer than its width. Its area is 40 square meters. What are the rectangle's dimensions? \n" ); document.write( "
Algebra.Com's Answer #180724 by richwmiller(17219)\"\" \"About 
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L=w+3
\n" ); document.write( "L*W=40
\n" ); document.write( "(W+3)*w=40
\n" ); document.write( "w^2+3w=40
\n" ); document.write( "complete the square
\n" ); document.write( "add (3/2)^2 to both sides
\n" ); document.write( "w^2+3w+9/4=169/4
\n" ); document.write( "(w+3/2)^2=(13/2)^2
\n" ); document.write( "w=-3/2+13/2=10/2=5
\n" ); document.write( "w=-3/2-13/2=-16/2=-8\r
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