document.write( "Question 946673: The lengths of the sides of a plot of land are such that the first leg is 7 miles shorter than the second leg and the hypotenuse is 1 mile longer than the second leg. Find the lengths of the sides of the plot of land?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I have worked this using Pythagorean theorem and came up with 12, 5, and 13, but I am not sure I did it right. Can anyone confirm my answers for me?
\n" ); document.write( "

Algebra.Com's Answer #577569 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
You're right.
\n" ); document.write( "We define a variable:
\n" ); document.write( "\"x\"= length of second .leg.
\n" ); document.write( ":\"x-7\"= length of second leg;
\n" ); document.write( "\"x%2B1\"= length of hypotenuse.
\n" ); document.write( "We apply the Pythagorean theorem:
\n" ); document.write( "
\n" ); document.write( "\"cross%28x%5E2%29%2Bx%5E2-14x%2B49=cross%28x%5E2%29%2B2x%2B1\"
\n" ); document.write( "\"x%5E2-14x%2B49=2x%2B1\"
\n" ); document.write( "<--->\"%28x-4%29%28x-12%29=0\"--->\"system%28x-4=0%2C%22or%22%2Cx-12=0%29\"--->\"system%28x=4%2C%22or%22%2Cx=12%29\"
\n" ); document.write( "\"x=4\"<--->\"x-7=4-7\"<--->\"x-7=-3\" does not work, because it yields a negative number for the length of the first leg.
\n" ); document.write( "\"x=12\"--->\"system%28x=12%2Cx-7=12-7%2Cx%2B1=12%2B1%29\"--->\"highlight%28system%28x=12%2Cx-7=5%2Cx%2B1=13%29%29%29\"
\n" ); document.write( "
\n" );