document.write( "Question 1182600: A rectangle is drawn so that the width is 3 feet shorter than the length. The area of the rectangle is 70 square feet. Find the length of the rectangle.
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Algebra.Com's Answer #812677 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Your equation is \r\n" );
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document.write( "    L*(L-3) = 70.\r\n" );
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document.write( "Simplify and reduce it to the standard form of a quadratic equation.\r\n" );
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document.write( "Then solve it using the quadratic formula or factoring (both work in this case).\r\n" );
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document.write( "ANSWER.  The length is 10 inches.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Also, you may guess the answer mentally without using any equation/equations.\r
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\n" ); document.write( "\n" ); document.write( "Since the left side of the equation is monotonically increasing function of the length L,\r
\n" ); document.write( "\n" ); document.write( "the guessed solution is UNIQUE: there is NO another solution.\r
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