document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=189971>Question 189971</A>: <I><SPAN STYLE=\"word-break: break-all;\">  Use the Completing the Square method to find the vertex form of the quadratic function  y = x^2 + 7x + 12.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #142547 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=142547\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Vertex form is:<BR>\n" );
document.write( "y= a(x-h)^2+k<BR>\n" );
document.write( ". <BR>\n" );
document.write( "y = x^2 + 7x + 12<BR>\n" );
document.write( "y = (x^2 + 7x + __ ) + 12  -  __<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Fill the blank with 1/2 of 'b' coefficient squared:<BR>\n" );
document.write( "((1/2)(7))^2 = (7/2)^2 = 49/4<BR>\n" );
document.write( ".<BR>\n" );
document.write( "y = (x^2 + 7x + 49/4 ) + 12 - 49/4<BR>\n" );
document.write( "y = (x^2 + 7x + 49/4 ) + 48/4 - 49/4<BR>\n" );
document.write( "y = (x^2 + 7x + 49/4 ) - 1/4<BR>\n" );
document.write( "y = (x + 7/2)^2 - 1/4  (this is what they're looking for)<BR>\n" );
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