document.write( "Question 420343: add
\n" ); document.write( "(4x^2-2xy+y^2)+(-8x^2-6xy-y^2)+(x^2+xy-9y^2)
\n" ); document.write( "

Algebra.Com's Answer #293748 by sudhanshu_kmr(1152)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "after addition : -3x^2 -7xy-9y^2
\n" ); document.write( "
\n" );