document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972369>Question 972369</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a rectangle pool has an area of 800 ft^2. the length is 10 feet longer than the width. find the dimensions of the pool. solve by completing the square. round answers to the nearest tenth of a foot. </SPAN>\n" );
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document.write( "length=x+10\r<BR>\n" );
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document.write( "x(x+10)=800 ft^2\r<BR>\n" );
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document.write( "x^2 + 10 x= 800 ft^2.\r<BR>\n" );
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document.write( "x^2 +10x +25= 825<BR>\n" );
document.write( "(x+5)^2=825\r<BR>\n" );
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document.write( "X+5+= +sqrt (825)<BR>\n" );
document.write( "x=-5 +sqrt (825)=-5 +28.72=23.7 ft.\r<BR>\n" );
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document.write( "Check: 23.7ft width * 33.7ft  length=798.69, which is in rounding error of 800 ft^2. </SPAN>\n" );
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