document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=976975>Question 976975</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello!\r<BR>\n" );
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document.write( "What are the rational zeros of this function? Please explain each step.\r<BR>\n" );
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document.write( "f(x) = x^3 – 21x – 20 \r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #598462 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=598462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What are the rational zeros of this function? Please explain each step. <BR>\n" );
document.write( "f(x) = x^3 – 21x – 20 <BR>\n" );
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document.write( "use rational roots theorem with synthetic division:\r<BR>\n" );
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document.write( "...0...|.....1......0......-21.......-20.......<BR>\n" );
document.write( ".-1...|.....1.....-1......-20........0. (-1 is a zero)<BR>\n" );
document.write( "f(x)=(x+1)(x^2-x-20)<BR>\n" );
document.write( "f(x)=(x+1)(x+4)(x-5)<BR>\n" );
document.write( "rational zeros are: -1, -4, and 5 </SPAN>\n" );
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