document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=215621>Question 215621</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help finding the vertex of the parabola... I'm just not sure how to break this equation down 3x^2+30x+71 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #162934 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=162934\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I need help finding the vertex of the parabola... I'm just not sure how to break this equation down 3x^2+30x+71<BR>\n" );
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document.write( "It's not an equation, there's no equal sign.  <BR>\n" );
document.write( "I'll assume it's = 0.<BR>\n" );
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document.write( "I have no idea what \"break this equation down\" might mean.<BR>\n" );
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document.write( "The vertex is at the point where x = -b/2a<BR>\n" );
document.write( "x = -30/6 = -5<BR>\n" );
document.write( "f(-5) = 75 - 150 + 71 = -4<BR>\n" );
document.write( "--> vertex at (-5,-4) </SPAN>\n" );
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