document.write( "Question 1091100: A rectangle has a length of 38 yards less than four times it's width. The area of the rectangle is 840 yd.² find the length of the rectangle \n" ); document.write( "
Algebra.Com's Answer #705554 by jorel1380(3719)\"\" \"About 
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Let w be the width. Then the length would be 4w-38. So:
\n" ); document.write( "w(4w-38)=840
\n" ); document.write( "4w²-38w-840=0
\n" ); document.write( "2w²-19w-420=0
\n" ); document.write( "(2w+21)(w-20)=0
\n" ); document.write( "w=-21/2 or 20
\n" ); document.write( "The width is 20; the length is 42
\n" ); document.write( "☺☺☺☺
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