document.write( "Question 256866: Okay: That question is- The width of a dock is 4m less than the length. The area is 12m squared. \r
\n" ); document.write( "\n" ); document.write( "So i know that I am trying to find the length so that obviously is my x. Then i also know that the width is 4m less than that, but i get so thrown off by the 12 squared that i can't figure out how to set up the problem :/
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Algebra.Com's Answer #188909 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
What is the area ? length times width.
\n" ); document.write( "You actually don't say what we are looking for. Are we looking for the width, length or both?
\n" ); document.write( "I will use A for area L for length and W for width
\n" ); document.write( "L*W=A
\n" ); document.write( "L*W=12
\n" ); document.write( "W=L-4
\n" ); document.write( "L*(L-4)=12
\n" ); document.write( "L^2-4L-12=0
\n" ); document.write( "(L-6)(L+2)=0
\n" ); document.write( "L=6 meters
\n" ); document.write( "W=L-4=2 meters
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