document.write( "Question 569997: is there Rectangle with 4 square cm and perimeter 10 \n" ); document.write( "
Algebra.Com's Answer #367498 by AnlytcPhil(1806)\"\" \"About 
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document.write( "            LW = 4\r\n" );
document.write( "       2L + 2W = 10\r\n" );
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document.write( "Divide the second equation by 2\r\n" );
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document.write( "         L + W = 5\r\n" );
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document.write( "Solve for L\r\n" );
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document.write( "             L = 5 - W\r\n" );
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document.write( "Substitute in\r\n" );
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document.write( "            LW = 4\r\n" );
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document.write( "      (5 - W)W = 4\r\n" );
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document.write( "       5W - W² = 4\r\n" );
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document.write( "  -W² + 5W - 4 = 0 \r\n" );
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document.write( "Multiply through by -1\r\n" );
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document.write( "   W² - 5W + 4 = 0\r\n" );
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document.write( "(W - 4)(W - 1) = 0\r\n" );
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document.write( "W - 4 = 0;  W - 1 = 0\r\n" );
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document.write( "    W = 4;      W = 1\r\n" );
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document.write( "L = 5 - W       L = 5 - W\r\n" );
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document.write( "L = 5 - 4       L = 5 - 1\r\n" );
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document.write( "L = 1           L = 4\r\n" );
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document.write( "So either a 1cm x 4cm or a 4cm x 1 cm rectangle.\r\n" );
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document.write( "Either of these, which are draw to scale:\r\n" );
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document.write( "Edwin
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