document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=616745>Question 616745</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the minimum or maximum value of the quadratic formula <BR>\n" );
document.write( "f(x)=2x^2-16x+20 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #387874 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=387874\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x)=2x^2-16x+20<BR>\n" );
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document.write( "Since the coefficient associated with the x^2 is POSITIVE, we conclude that it is a parabola that opens upwards.  Therefore, the vertex will give the MINIMUM.<BR>\n" );
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document.write( "x-value of vertex:<BR>\n" );
document.write( "x = -b/(2a)<BR>\n" );
document.write( "x = -(-16)/(2*2)<BR>\n" );
document.write( "x = (16)/(4)<BR>\n" );
document.write( "x = 4<BR>\n" );
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document.write( "y-value of vertex:<BR>\n" );
document.write( "f(4)=2*4^2-16(4)+20<BR>\n" );
document.write( "f(4)=2*16-16(4)+20<BR>\n" );
document.write( "f(4)=32-64+20<BR>\n" );
document.write( "f(4)=-32+20<BR>\n" );
document.write( "f(4)=-12  (this is the answer they're looking for) (minimum of quadratic)<BR>\n" );
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