document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=989407>Question 989407</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me solve this system by substitution?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2%2B4y%5E2=20 ALIGN=MIDDLE  ALT=\"+x%5E2%2B4y%5E2=20\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+xy=4+ ALIGN=MIDDLE  ALT=\"+xy=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 #609752 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=609752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Try <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=4%2Fx ALIGN=MIDDLE  ALT=\"y=4%2Fx\"   DISABLED_style= \"max-width:90%; height:auto;\" > and then make the first equation  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B4%284%2Fx%29%5E2=20 ALIGN=MIDDLE  ALT=\"x%5E2%2B4%284%2Fx%29%5E2=20\"   DISABLED_style= \"max-width:90%; height:auto;\" >;  if you can work through that, then you will just do the algebra steps; otherwise you might want help with this equation.  You will have an equation in quadratic form.\r<BR>\n" );
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document.write( "Next step might be,  ... <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4%2B4%2A4%5E2=20x%5E2 ALIGN=MIDDLE  ALT=\"x%5E4%2B4%2A4%5E2=20x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4-20x%5E2%2B64=0 ALIGN=MIDDLE  ALT=\"x%5E4-20x%5E2%2B64=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >--------quadratic form.  </SPAN>\n" );
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