document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=280601>Question 280601</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find vertex of the parabola y=4x squared - 16x - 11 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203953 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=203953\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=4x^2-16x-11<BR>\n" );
document.write( "vertex <BR>\n" );
document.write( "x=-b/2a<BR>\n" );
document.write( "x=-(-16)/2*4<BR>\n" );
document.write( "x=16/8=2<BR>\n" );
document.write( "y=4*2^2-16*2-11<BR>\n" );
document.write( "y=16-32-11<BR>\n" );
document.write( "y=-16-11<BR>\n" );
document.write( "y=-27<BR>\n" );
document.write( "(2,-27) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );