document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=83263>Question 83263</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a room has a floor area of 520 square feet. one dimension is 6 feet more than the other.  Find the dimensions of the room.\r<BR>\n" );
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document.write( "i know that the formula is a=lw  would i do as i would a equation  im not sure can you please help understand\r<BR>\n" );
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document.write( "thank you <BR>\n" );
document.write( "jenzbears </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #59771 by </B><A HREF=/tutors/aboutme.mpl?userid=ptaylor><B>ptaylor(2198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ptaylor><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ptaylor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=59771\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "YOU ARE RIGHT!!!  A=LW=520 SQ FT\r<BR>\n" );
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document.write( "Let length=L\r<BR>\n" );
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document.write( "Now we are told the the one dimension (width) is 6 feet more than the other (length).  So:\r<BR>\n" );
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document.write( "Width would=L+6  so our equation to solve is:\r<BR>\n" );
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document.write( "520=L(L+6)  get rid of parens\r<BR>\n" );
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document.write( "520=L^2+6L  subtract 520 from both sides\r<BR>\n" );
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document.write( "520-520=L^2+6L-520  collect like terms\r<BR>\n" );
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document.write( "L^2+6L-520=0  quadratic in standard form where A=1, B=6 and C=-520.  By inspection, we can see that this quadratic can be factored.  The factors are:\r<BR>\n" );
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document.write( "(L+26)(L-20)=0\r<BR>\n" );
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document.write( "L=-26ft--------------------------discount negative lengths\r<BR>\n" );
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document.write( "L=20 ft-------------------------------Length\r<BR>\n" );
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document.write( "L+6=20+6=26ft--------------------------Width\r<BR>\n" );
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document.write( "CK\r<BR>\n" );
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document.write( "20*26=520<BR>\n" );
document.write( "520=520\r<BR>\n" );
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document.write( "Note:  If the A coefficient of a quadratic is 1, then the B coefficient is the sum of the factors of the C coefficient.\r<BR>\n" );
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document.write( "Hope this helps---ptaylor<BR>\n" );
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