document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=311854>Question 311854</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. Show your work\r<BR>\n" );
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document.write( "f (x) = - x^2 + 2x - 1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222998 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=222998\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f (x) = - x^2 + 2x - 1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "X=(-2+-SQRT[2^2-4*-1*-1])/2*-1<BR>\n" );
document.write( "X=(-2+-SQRT[4-4])/-2<BR>\n" );
document.write( "X=(-2+-SQRT0)/-2<BR>\n" );
document.write( "X=-2/-2=1 ANS.<BR>\n" );
document.write( "F(2)=-2^2+2*2-1<BR>\n" );
document.write( "F(2)=4+4-1<BR>\n" );
document.write( "F(2)=7 ANS<BR>\n" );
document.write( "F(7)=-7^2+2*7-1<BR>\n" );
document.write( "F(7)=-49+14-1<BR>\n" );
document.write( "F(7)=-50+14<BR>\n" );
document.write( "F(7)=-36 ANS.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C++-x%5E2+%2B2x+-1%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C++-x%5E2+%2B2x+-1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -x^2 +2x -1).  </SPAN>\n" );
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