document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1206237>Question 1206237</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show that (AxB).(AxB) + (A.B)^2 =(A^2)(B^2) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #843525 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52781)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=843525\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "Show that (AxB).(AxB) + (A.B)^2 =(A^2)(B^2)<BR>\n" );
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document.write( "I don't know what do you want and what do you mean.\r<BR>\n" );
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document.write( "But over the set of all real numbers this identity is incorrect / invalid.\r<BR>\n" );
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document.write( "For example, take A= 1, B= 1 to get contradiction..\r<BR>\n" );
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document.write( "Over the set of all square matrices, this identity is not valid, too.\r<BR>\n" );
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document.write( "To get and example, consider identity matrices.\r<BR>\n" );
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