document.write( "Question 198882: if x+y=9 and y-x=7, then x^2+y^2= ? \n" ); document.write( "
Algebra.Com's Answer #149410 by radikrr(7)![]() ![]() ![]() You can put this solution on YOUR website! x+y=9 \n" ); document.write( "y-x=7\r \n" ); document.write( "\n" ); document.write( "y=x+7 x+x+7=9 2x=2 x=1 y=8\r \n" ); document.write( "\n" ); document.write( "x^2+y^2= 1^2+8^2=65 \n" ); document.write( " \n" ); document.write( " |