document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=177070>Question 177070</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this quadratic equation in vertex form.<BR>\n" );
document.write( "             y=x^2+12x-4<BR>\n" );
document.write( "thank you very much  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #132096 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=132096\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The vertex form is:<BR>\n" );
document.write( "y= a(x-h)^2+k<BR>\n" );
document.write( ".<BR>\n" );
document.write( "This involves \"completing the square\".<BR>\n" );
document.write( "For reference see:<BR>\n" );
document.write( "http://www.purplemath.com/modules/sqrvertx.htm<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y=x^2+12x-4<BR>\n" );
document.write( "y+4 = x^2+12x<BR>\n" );
document.write( "y+4+36 = x^2+12x+36<BR>\n" );
document.write( "y+40 = (x+6)^2<BR>\n" );
document.write( "y = (x+6)^2 - 40<BR>\n" );
document.write( "y = (x-(-6))^2 + (-40)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Now, we see that:<BR>\n" );
document.write( "(h,k) = (-6,-40)<BR>\n" );
document.write( " </SPAN>\n" );
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