document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=633741>Question 633741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve<BR>\n" );
document.write( "x^2+4x=-20 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399081 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=399081\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2+4x=-20<BR>\n" );
document.write( "x^2+4x+20=0<BR>\n" );
document.write( "cannot be factored<BR>\n" );
document.write( "so we use complete the square.<BR>\n" );
document.write( "x^2+4x=-20<BR>\n" );
document.write( "x^2+4x+4=-16<BR>\n" );
document.write( "(x+2)^2=-16<BR>\n" );
document.write( "x+2=sqrt(-16)<BR>\n" );
document.write( "x=-2+4i<BR>\n" );
document.write( "x=-2-4i </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );