document.write( "Question 93457: If 4(x+y)(x-y) = 40 and x - y = 20, what is the value of x + y? \n" ); document.write( "
Algebra.Com's Answer #68039 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! 4(X+Y)*20=40 \n" ); document.write( "80(X+Y)=40 \n" ); document.write( "(X+Y)=40/80 \n" ); document.write( "(X+Y)=.5 ANSWER. \n" ); document.write( " \n" ); document.write( " |