document.write( "Question 293217: the area of the rectangle below is 40. WHat is the perimeter
\n" ); document.write( "Width: x+3
\n" ); document.write( "Length: x+6
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Algebra.Com's Answer #211678 by Earlsdon(6294)\"\" \"About 
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The area of a rectangle is given by:
\n" ); document.write( "\"A+=+L%2AW\" Substitute \"L+=+%28x%2B6%29\", \"W+=+%28x%2B3%29\", and \"A+=+40\"
\n" ); document.write( "\"40+=+%28x%2B6%29%28x%2B3%29\" Perform the multiplication.
\n" ); document.write( "\"40+=+x%5E2%2B9x%2B18\" Subtract 40 from both sides.
\n" ); document.write( "\"x%5E2%2B9x-22+=+0\" Solve this quadratic equation by factoring.
\n" ); document.write( "\"%28x%2B11%29%28x-2%29+=+0\" Apply the \"zero product\" rule.
\n" ); document.write( "\"x%2B11+=+0\" or \"x-2+=+0\" so that...
\n" ); document.write( "\"highlight%28x+=+-11%29\" or \"highlight_green%28x+=+2%29\" Discard the negative solution as the dimensions cannot be negative.
\n" ); document.write( "\"L+=+x%2B6\" Substitute x = 2.
\n" ); document.write( "\"L+=+2%2B6\"
\n" ); document.write( "\"highlight_green%28L+=+8%29\" and...
\n" ); document.write( "\"W+=+x%2B3\" Substitute x = 2.
\n" ); document.write( "\"W+=+2%2B3\"
\n" ); document.write( "\"highlight_green%28W+=+5%29\"
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