document.write( "Question 1936: Word Problem:\r
\n" ); document.write( "\n" ); document.write( "The table used for table tennis is 4 ft longer than it is wide and has a area of 45 ft^2. What are the dimensions of the table? \n" ); document.write( "

Algebra.Com's Answer #763 by usyim88hk(158) $\"\"$ $\"About$

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let the shoeter side be x
\n" ); document.write( "x*(x+4) = 45
\n" ); document.write( "x^2 + 4x = 45
\n" ); document.write( "x^2 + 4x - 45 = 0
\n" ); document.write( "Now we can use the qyradratic formula
\n" ); document.write( " $\"x=%28-4%2B-sqrt%284%5E2-4%281%29%28-45%29%29%29%2F%282%281%29%29\"$
\n" ); document.write( " $\"x=%28-4%2B-sqrt%28196%29%29%2F2\"$
\n" ); document.write( " $\"x=%28-4%2B-14%29%2F2\"$
\n" ); document.write( "x = -18/2 or 10/2
\n" ); document.write( "x = -9 or 5
\n" ); document.write( "Since length of anyhting can not be a negative number, 5 is the length of the short side and 5+4 = 9 will be the longer length of the table\r
\n" ); document.write( "\n" ); document.write( "The dimension of the table tennis table is 5ft*9ft \n" ); document.write( "

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