document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=393556>Question 393556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 100-2xy-y^2=x^2, which of the following must be true? <BR>\n" );
document.write( "a. x-y=10<BR>\n" );
document.write( "b. x^2+y^2=100<BR>\n" );
document.write( "c. (x+y)(x-y)=100<BR>\n" );
document.write( "d. (x+y)^2=100<BR>\n" );
document.write( "e. (x-y)^2=100<BR>\n" );
document.write( "please explain how to solve this for me, its been awhile.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #279292 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=279292\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If 100-2xy-y^2=x^2, which of the following must be true? <BR>\n" );
document.write( "a. x-y=10<BR>\n" );
document.write( "b. x^2+y^2=100<BR>\n" );
document.write( "c. (x+y)(x-y)=100<BR>\n" );
document.write( "d. (x+y)^2=100<BR>\n" );
document.write( "e. (x-y)^2=100<BR>\n" );
document.write( "please explain how to solve this for me, its been awhile. <BR>\n" );
document.write( "...<BR>\n" );
document.write( "100-2xy-y^2=x^2<BR>\n" );
document.write( "bring all the variables to the right side of the equation<BR>\n" );
document.write( "100 = x^2+2xy+y^2<BR>\n" );
document.write( "...<BR>\n" );
document.write( "use the formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E2%2B2ab%2Bb%5E2=%28a%2Bb%29%5E2 ALIGN=MIDDLE  ALT=\"a%5E2%2B2ab%2Bb%5E2=%28a%2Bb%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "a=x,b=y<BR>\n" );
document.write( "100=(x+y)^2<BR>\n" );
document.write( "OPTION D<BR>\n" );
document.write( "...<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );