document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=469066>Question 469066</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i need complete solution for this logical proof<BR>\n" );
document.write( "AB+CD=(A+C)(A+D)(B+C)(B+D)\r<BR>\n" );
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document.write( "Where:<BR>\n" );
document.write( "   A+BC=(A+B)(A+C)<BR>\n" );
document.write( "   A+AB=A<BR>\n" );
document.write( "   A+B=B+A<BR>\n" );
document.write( "    A= AA<BR>\n" );
document.write( "    A+A=A </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #321869 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=321869\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (A+C)(A+D)(B+C)(B+D) <BR>\n" );
document.write( "=((A+C)(A+D))((B+C)(B+D)) ASSUMING associativity\r<BR>\n" );
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document.write( "= (A + CD)(B + CD) from A+BC=(A+B)(A+C)\r<BR>\n" );
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document.write( "= (CD + A)(CD + B) from A+B=B+A\r<BR>\n" );
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document.write( "= CD + AB from  A+BC=(A+B)(A+C)<BR>\n" );
document.write( "   </SPAN>\n" );
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