document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=306987>Question 306987</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Explain why x^2 + 5x + 8 is prime (not factorable). How do you know? Give 2 examples of a prime polynomial (they cannot both be binomials). Give 2 examples of polynomials that are NOT prime (they cannot both be binomials), factor them, and explain what you did to factor them.\r<BR>\n" );
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document.write( "How would you explain to another student how to decide if any given polynomial is prime or not?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #219634 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=219634\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  x^2 + 5x + 8<BR>\n" );
document.write( "try to factor<BR>\n" );
document.write( "1*8=8<BR>\n" );
document.write( "we want factors of 8 which add up to 5<BR>\n" );
document.write( "+ and -<BR>\n" );
document.write( "8/1<BR>\n" );
document.write( "4/2<BR>\n" );
document.write( "2/4<BR>\n" );
document.write( "1/8<BR>\n" );
document.write( "there are no factors of 8 with add up to 5<BR>\n" );
document.write( "The polynomial is prime.<BR>\n" );
document.write( "x^2 + 6x + 8<BR>\n" );
document.write( "find factors of 8 (see above) which add up to 6<BR>\n" );
document.write( "(x+2)*(x+4)<BR>\n" );
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