document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43487>Question 43487</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write y=-4x^2+8x-1 in vertex form.\r<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 #28468 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=28468\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write y=-4x^2+8x-1 in vertex form.\r<BR>\n" );
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document.write( "y+1-4(1^2)=-4(x^2-2x+1^2)\r<BR>\n" );
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document.write( "y-3=-4(x-1)^2<BR>\n" );
document.write( "Vertex at:<BR>\n" );
document.write( "  x=1, y=3\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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