document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=871368>Question 871368</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help to factor this trinomial -x^2+7x+18 please explain step by step so I can do it myself :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #525483 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=525483\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> start by finding the prime factors of 18 which are 3*3*2<BR>\n" );
document.write( "we want to factor -x^2 + 7x + 18 <BR>\n" );
document.write( "we have (-x +  ) times (x +  )<BR>\n" );
document.write( "looking at the prime factors, we want to get a 7, note that 9 times 2 results in the 7, therefore<BR>\n" );
document.write( "-x^2 + 7x + 18 = (-x + 9) times (x + 2)\r<BR>\n" );
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