document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=847555>Question 847555</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am working on a problem that I am having difficulty answering. There is not an answer key, so I cannot see where I am going wrong in my calculations. This is not for a test; just homework.\r<BR>\n" );
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document.write( "Problem: Completely factor the difference of two squares. (I do not need to solve.)\r<BR>\n" );
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document.write( "98-162z^2\r<BR>\n" );
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document.write( "What I get is sq. rt. of 2, times (7-9z^2).<BR>\n" );
document.write( "I know I need to finish factoring the 9 & the z^2, but I am stuck. Please help? Frustrated because I can see it's so easy but my brain is caught up.\r<BR>\n" );
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document.write( "Thanks in advance for your help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #510538 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=510538\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> -2*(9z-7)*(9z+7)<BR>\n" );
document.write( "First factor out -2<BR>\n" );
document.write( "Why minus ?<BR>\n" );
document.write( "To put the z first.<BR>\n" );
document.write( "-2*(81z^2-49)<BR>\n" );
document.write( "-2*(9z-7)*(9z+7)<BR>\n" );
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