document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=650250>Question 650250</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the x coordinate of the vertex? \r<BR>\n" );
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document.write( "y = -x2 + 4x - 2 <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #407255 by </B><A HREF=/tutors/aboutme.mpl?userid=sheldonbbtrocks><B>sheldonbbtrocks(115)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sheldonbbtrocks><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=sheldonbbtrocks><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=407255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First we need to label the problem's a, b, and c.\r<BR>\n" );
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document.write( "-1=a, 4=b, and -2=c\r<BR>\n" );
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document.write( "Now we use the vertex formula: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-b%2F2a ALIGN=MIDDLE  ALT=\"-b%2F2a\"   DISABLED_style= \"max-width:90%; height:auto;\" > to find the x coordinate of the vertex:\r<BR>\n" );
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document.write( "Plug in the variables: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F2%28-2%29 ALIGN=MIDDLE  ALT=\"-4%2F2%28-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F-4 ALIGN=MIDDLE  ALT=\"-4%2F-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >}\r<BR>\n" );
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document.write( "The reduced form of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F-4 ALIGN=MIDDLE  ALT=\"-4%2F-4\"   DISABLED_style= \"max-width:90%; height:auto;\" > is 1\r<BR>\n" );
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document.write( "So, the x coordinate of the vertex is (1,0) </SPAN>\n" );
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