document.write( "Question 799030: A rectangle has an area of 728 square inches and a length which is four inches more than four times the width. Find the length and the width of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #482465 by Finavon(81)\"\" \"About 
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sides l and w
\n" ); document.write( "l*w=728 (1)
\n" ); document.write( "l=4w+4 {2)
\n" ); document.write( "subst for l in (1)
\n" ); document.write( "w*(4w+4)=728
\n" ); document.write( "\"+w%5E2+%2B+w+-+182+=+0+\"
\n" ); document.write( "\"+w+=+%28-1+%2B-sqrt%281%2B4%2A182%29%29%2F2+\"
\n" ); document.write( "\"+w+=+%28-1+%2B-sqrt%28729%29%29%2F2+=+%28-1+%2B-+27%29%2F2+\"
\n" ); document.write( "Real solution w=13 in and l=56 in
\n" ); document.write( "Check: 13*56 = 728
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