document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=943325>Question 943325</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How would factor these trinomial factors 9z^2-64? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575113 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=575113\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a^2 - b^2 = (a-b) * (a+b)\r<BR>\n" );
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document.write( "that's the general form.\r<BR>\n" );
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document.write( "your equation is:\r<BR>\n" );
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document.write( "9z^2 - 64 = (3z)^2 - 8^2\r<BR>\n" );
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document.write( "this is the same form if you let (3z) = a and 8 = b\r<BR>\n" );
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document.write( "you get 9z^2 - 64 = (3z)^2 - 8^2 = (3z - 8) * (3z + 8)\r<BR>\n" );
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document.write( "multiply those out and you get (3z)^2 - 3z*8 - 3z*8 - 8^2 which becomes (3z)^2 - 8^2 which becomes 9z^2 - 64.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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