document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=337017>Question 337017</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.\r<BR>\n" );
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document.write( "f(x) = -2x^2 + 2x - 9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #241576 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=241576\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "-2x^2+2x-9<BR>\n" );
document.write( "a= -2, b=2 , c=-9<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x1= (-2+sqrt(4-72))/2*-2<BR>\n" );
document.write( "x1=(-2+sqrt(-68)))/-4<BR>\n" );
document.write( "x1=0.5 +sqrt(-68)/4<BR>\n" );
document.write( "x2=0.5-sqrt(-68)/4<BR>\n" );
document.write( "No x intercepts \r<BR>\n" );
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document.write( "Plot values for x you will get a graph as below\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28500%2C500%2C-10%2C10%2C-20%2C0%2C-2x%5E2+%2B+2x+-+9%29 ALIGN=MIDDLE  ALT=\"graph%28500%2C500%2C-10%2C10%2C-20%2C0%2C-2x%5E2+%2B+2x+-+9%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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