document.write( "Question 1036139: The area of a rectangle is 91 square centimeters. Its length is x+2 and its width is x-4. Find the perimeter of the rectangle. \n" ); document.write( "
Algebra.Com's Answer #650747 by Aldorozos(172)\"\" \"About 
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(x+2)(x-4)= 90
\n" ); document.write( "x^2 -2x-8=90
\n" ); document.write( "solving this quadratic equation we get x=11\r
\n" ); document.write( "\n" ); document.write( "Width = 11-4 = 9
\n" ); document.write( "Length = 11+2 = 13
\n" ); document.write( "Perimeter is 2(9+13) = 2*22 = 44
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