document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1134228>Question 1134228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Fully factor 81(7a+3)^4 - 72(7a+3)^2 + 16 \r<BR>\n" );
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document.write( "I would like MathTherapy to solve my question please!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #751549 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13198)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=751549\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "When factoring complicated-looking expressions, it is a good idea to look first at some common patterns:<br><BR>\n" );
document.write( "a^2+2ab+b^2 = (a+b)^2  [three terms; first and last terms positive perfect squares, middle term positive]<br><BR>\n" );
document.write( "a^2-2ab+b^2 = (a-b)^2  [three terms; first and last terms positive perfect squares, middle term negative]<br><BR>\n" );
document.write( "a^2-b^2 = (a+b)(a-b)  [two terms; both perfect squares; first positive and second negative]<br><BR>\n" );
document.write( "This example fits one of those patterns (first and last terms positive perfect squares; middle term negative):<br><BR>\n" );
document.write( "81(7a+3)^4 = [9(7a+3)^2)]^2; 16 = 4^2 </SPAN>\n" );
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