document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=209573>Question 209573</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have three that I need help on.<BR>\n" );
document.write( "1.(4x^2+2xy-3y^2)+(-2x^2+5xy-2^2)<BR>\n" );
document.write( "2.(5r^3-6rs+3s^2)-(-5r^3-3rs+4s^2)<BR>\n" );
document.write( "3.(3a^4+2ab+6b^2)+(-7a^4-8ab-9b^2)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #158521 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=158521\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1.(4x^2+2xy-3y^2)+(-2x^2+5xy-2[?]^2) [are you missing a y^2 term here?]<BR>\n" );
document.write( "2x^2+7xy-5y^2\r<BR>\n" );
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document.write( "2.(5r^3-6rs+3s^2)-(-5r^3-3rs+4s^2)<BR>\n" );
document.write( "10r^3+9rs+7s^2\r<BR>\n" );
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document.write( "3.(3a^4+2ab+6b^2)+(-7a^4-8ab-9b^2)<BR>\n" );
document.write( "-4a^4-6ab-3b^2<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );