document.write( "Question 1074366: the area of a rectangular picture is 160 cm ( squared)and the width is 4 cm less than the length, find this width in cm, correct significant figures \n" ); document.write( "
Algebra.Com's Answer #689035 by ikleyn(52780)\"\" \"About 
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document.write( "x*(x+4) = 160,\r\n" );
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document.write( "x^2 + 4x - 160 = 0,\r\n" );
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document.write( "x = \"-4+%2B-+sqrt%2816+%2B+4%2A160%29%29%2F2\" = \"%28-4+%2B-+sqrt%28656%29%29%2F2\".\r\n" );
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document.write( "The only meaningful positive root is \"%28sqrt%28656%29+-+4%29%2F2\" = 10.806 (approximately).\r\n" );
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