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)![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |