document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040657>Question 1040657</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (x^2y-xy+x^2) + (2x^2+3xy-x^2 y) + (3x^2 -y^2  +x^2 y) \r<BR>\n" );
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document.write( "please help me perform the indicated operations on the polynomials expressions  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655522 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=655522\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x^2y-xy+x^2) + (2x^2+3xy-x^2 y) + (3x^2 -y^2  +x^2 y) <BR>\n" );
document.write( "Add or subtract like terms.<BR>\n" );
document.write( "There are 3 x^2y terms, two positive and one negative, so there is 1 positive x^2 y<BR>\n" );
document.write( "There is a minus xy and +3 xy, so there are 2 positive xy terms<BR>\n" );
document.write( "There is an x^2, a 2x^2 and a 3x^2 for 6 x^2<BR>\n" );
document.write( "I count the terms that I have used.  So far, I have used 8, but there is a ninth.<BR>\n" );
document.write( "It is -y^2<BR>\n" );
document.write( "I collect the terms<BR>\n" );
document.write( "6x^2+2xy+x^2y-y^2 </SPAN>\n" );
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