document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=442576>Question 442576</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 9).Factor xy-xa+y-a\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #305286 by </B><A HREF=/tutors/aboutme.mpl?userid=swincher4391><B>swincher4391(1107)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=swincher4391><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=swincher4391><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=305286\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Notice these two groupings:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28xy%29-xa%2Bhighlight%28y%29-a ALIGN=MIDDLE  ALT=\"highlight%28xy%29-xa%2Bhighlight%28y%29-a\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=xy+-+highlight%28xa%29%2B+y+-+highlight%28a%29 ALIGN=MIDDLE  ALT=\"xy+-+highlight%28xa%29%2B+y+-+highlight%28a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Rearrange so that we have a group of ys and a group of as.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cartoon%28xy-xa%2By-a%2Cxy%2By-xa-a%2Cy%28x%2B1%29-a%28x%2B1%29%2Cy%2Ahighlight%28x%2B1%29+-+a%2Ahighlight%28x%2B1%29%2C+%28x%2B1%29%28y-a%29%2C+highlight%28%28x%2B1%29%28y-a%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Once we factor out a ys and as, we notice each has a common factor of (x+1), so we factor out x+1. \r<BR>\n" );
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document.write( "Our final answer is :  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28%28x%2B1%29%28y-a%29%29 ALIGN=MIDDLE  ALT=\"highlight%28%28x%2B1%29%28y-a%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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