document.write( "Question 146931: Solve system using the subsitution method\"
\n" ); document.write( "x^2+3y=25
\n" ); document.write( "x+y=7 \n" ); document.write( "
Algebra.Com's Answer #107306 by 24HoursTutor.com(40)\"\" \"About 
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x^2+3y = 25
\n" ); document.write( "and
\n" ); document.write( "x+y=7
\n" ); document.write( "So, y = 7 - x
\n" ); document.write( "Now, we substitute this value of y in the first equation to get :\r
\n" ); document.write( "\n" ); document.write( "x^2 + 3(7-x) = 25
\n" ); document.write( "x^2 + 21 - 3x = 25
\n" ); document.write( "x^2 -3x= 25 - 21
\n" ); document.write( "x(x-3) = 4 ( We take the common multiple x outside )
\n" ); document.write( "x = 4
\n" ); document.write( "Since x = 4
\n" ); document.write( "y = 7- x = 7-4 = 3\r
\n" ); document.write( "\n" ); document.write( "Ans. x=4, y=3
\n" ); document.write( "We can also check our answers by substituting the correct values in the given equations :
\n" ); document.write( "x^2+3y=25
\n" ); document.write( "4^2+3X3 = 25
\n" ); document.write( "16 + 9 = 25\r
\n" ); document.write( "\n" ); document.write( "Which means our values for x and y are correct.
\n" ); document.write( "The above question is solved by one of the experts from 24HoursTutor.com
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