document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=746432>Question 746432</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the vertex of the following math problem? <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=what+is+the+vertex+of+the+following+math+problem%3F+ ALIGN=MIDDLE  ALT=\"what+is+the+vertex+of+the+following+math+problem%3F+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  y = -x^2 - 4x - 3   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #454266 by </B><A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><B>tommyt3rd(5050)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><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=tommyt3rd><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=454266\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=++y+=+-x%5E2+-+4x+-+3++ ALIGN=MIDDLE  ALT=\"++y+=+-x%5E2+-+4x+-+3++\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "has a=-1, b=-4, c=-3\r<BR>\n" );
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document.write( "We can use the vertex formula:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%0D%0Ax%5Bmax%5D=%28-b%29%2F%282a%29=%28-%28-4%29%29%2F%282%28-1%29%29=-2%0D%0A ALIGN=MIDDLE  ALT=\"%0D%0Ax%5Bmax%5D=%28-b%29%2F%282a%29=%28-%28-4%29%29%2F%282%28-1%29%29=-2%0D%0A\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "and substitute to get y:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=++y+=+-%28-2%29%5E2+-+4%28-2%29+-+3+=-4%2B8-3=1+ ALIGN=MIDDLE  ALT=\"++y+=+-%28-2%29%5E2+-+4%28-2%29+-+3+=-4%2B8-3=1+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "so our vertex is v(-2,1) </SPAN>\n" );
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