document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870317>Question 870317</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all the real zeros of the polynomial. Use the quadratic formula if necessary<BR>\n" );
document.write( "4x3 &#8722; 10x2 + 9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524802 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=524802\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It's not a quadratic, it's a cubic.<BR>\n" );
document.write( "Try the factors of 9 first, 1, 3 & 9 plus and minus<BR>\n" );
document.write( "If that doesn't work, try the factors /2, then /4<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "You can use an Excel sheet to do the arithmetic, or a graphing calculator, or graphical methods.<BR>\n" );
document.write( "If you find 1 real zero, then a quadratic will be left.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "f(x) = 4x^3 - 10x^2 + 9<BR>\n" );
document.write( "f'(x) = 12x^2 - 20x = 0<BR>\n" );
document.write( "x = 0, x = 5/3<BR>\n" );
document.write( "f(0) = 9, f(5/3) <0<BR>\n" );
document.write( "--> a zero between 0 and 5/3<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );