document.write( "Question 1186397: The length of a rectangular floor is two metres more than twice its width. If a diagonal of the rectangle is 13 meters, find the area of the floor. \n" ); document.write( "
Algebra.Com's Answer #817294 by josgarithmetic(39620)\"\" \"About 
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\"%282u%2B2%29%5E2%2Bu%5E2=13%5E2\", length and width and diagonal form a right triangle, longest side being the diagonal, so using Pythagorean Theorem.\r
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\n" ); document.write( "\n" ); document.write( "\"4u%5E2%2B8u%2B4%2Bu%5E2=169\"\r
\n" ); document.write( "\n" ); document.write( "\"5u%5E2%2B8u=165\"\r
\n" ); document.write( "\n" ); document.write( "\"5u%5E2%2B8u-165=0\"\r
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\n" ); document.write( "\n" ); document.write( "discrimin, \"64%2B20%2A165=3364=58%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"u=%28-8%2B58%29%2F10\"
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\n" ); document.write( "60 square meters
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