document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=133795>Question 133795</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello and thanks for helping me out in advance.  This question is on a take home quiz and  I\"m not sure how to do it.  The directions say to find the greatest common factor here is the question<BR>\n" );
document.write( "-12ab, 21a^2, 18ab^2, -21b^2<BR>\n" );
document.write( "now where i'm having the trouble is there are no common terms. Or at least I can't see any because there are non that have both an a and b or just an a or b I\"m assuming 3 and then something after it but I have no clue..I know it's probably an easy answer but I can't seem to come up with it. Thanks<BR>\n" );
document.write( "Christina </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #97879 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=97879\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prime factors of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-12ab ALIGN=MIDDLE  ALT=\"-12ab\"   DISABLED_style= \"max-width:90%; height:auto;\" >, -1, 2, 2, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, a, b  (missing a 7)<BR>\n" );
document.write( "Prime factors of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21a%5E2 ALIGN=MIDDLE  ALT=\"21a%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 7, a, a   (missing a 2, a b and a -1)<BR>\n" );
document.write( "Prime factors of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=18ab%5E2 ALIGN=MIDDLE  ALT=\"18ab%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 2, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 3, a, b, b  (missing a 7 and a -1)<BR>\n" );
document.write( "Prime factors of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-21b%5E2 ALIGN=MIDDLE  ALT=\"-21b%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, -1, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, 7, b, b (missing a 2 and an a)\r<BR>\n" );
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document.write( "You are correct.  The only factor in common is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3 ALIGN=MIDDLE  ALT=\"3\"   DISABLED_style= \"max-width:90%; height:auto;\" >, so the GCF is 3. </SPAN>\n" );
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