document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286814>Question 286814</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me slove this question, I don't understand how to solve and graph it <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-y%5E2=4 ALIGN=MIDDLE  ALT=\"x%5E2-y%5E2=4\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207985 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=207985\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I haven't \"sloved\" anything in a long time. It brings back memories.<BR>\n" );
document.write( "x^2-y^2=4<BR>\n" );
document.write( "(x-y)*(x+y)=4<BR>\n" );
document.write( "It can't be solved since there are two variables (unknowns) and only one equation.<BR>\n" );
document.write( "if y=0 then x=2 and x=-2<BR>\n" );
document.write( " the graph is a hyperbola. </SPAN>\n" );
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