document.write( "Question 943237: The length of a rectangle is 6 more than the width. The area is 720 sq. ft. What is the length and width of the rectangle? \n" ); document.write( "
Algebra.Com's Answer #575029 by TimothyLamb(4379)\"\" \"About 
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x = length in feet
\n" ); document.write( "y = width in feet
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\n" ); document.write( "x = y + 6
\n" ); document.write( "y = x - 6
\n" ); document.write( "xy = 720
\n" ); document.write( "x(x - 6) = 720
\n" ); document.write( "xx - 6x - 720 = 0
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\n" ); document.write( "the above quadratic equation is in standard form, with a=1, b=-6 and c=-720
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\n" ); document.write( "to solve the quadratic equation, by using the quadratic formula, copy and paste this:
\n" ); document.write( "1 -6 -720
\n" ); document.write( "into this solver: http://sooeet.com/math/quadratic-equation-solver.php
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\n" ); document.write( "the quadratic has two real roots at:
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\n" ); document.write( "x = 30
\n" ); document.write( "x = -24
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\n" ); document.write( "the negative root doesn't fit the problem statement, so use the positive root:
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\n" ); document.write( "answer:
\n" ); document.write( "x = 30
\n" ); document.write( "y = x - 6
\n" ); document.write( "y = 30 - 6
\n" ); document.write( "y = 24
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\n" ); document.write( "Solve and graph linear equations:
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