document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=458820>Question 458820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> which expression is prime number?<BR>\n" );
document.write( "a.x2+4x+3<BR>\n" );
document.write( "b.x2+5x+6<BR>\n" );
document.write( "c.x2+6+8<BR>\n" );
document.write( "d.none of the above </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #314798 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=314798\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The phrase \"prime number\" is reserved only for positive integers, not polynomial expressions. However, if you mean \"which expression is a *prime polynomial*\" that makes more sense (prime polynomial is a polynomial that cannot be factored into linear factors with integer coefficients).\r<BR>\n" );
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document.write( "We can see that a and b factor to (x+1)(x+3) and (x+1)(x+5) respectively. I have to assume you mean x^2 + 6x + 8 for c), which factors to (x+2)(x+4). So the answer is d), none of the above. </SPAN>\n" );
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