document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143397>Question 143397</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9781567655513/algebrahomeworkh>amscos mathematics b</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> givin am+cn<BR>\n" );
document.write( "      Mb=Nd\r<BR>\n" );
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document.write( "Prove ab+cd </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104350 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The way you have written this problem makes no sense.  Given am+cn?  am+cn equals what?  Also, was there a figure included?\r<BR>\n" );
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document.write( "Now, if you just made a mistake typing and meant:\r<BR>\n" );
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document.write( "Given <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=am=cn ALIGN=MIDDLE  ALT=\"am=cn\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=mb=nd ALIGN=MIDDLE  ALT=\"mb=nd\"   DISABLED_style= \"max-width:90%; height:auto;\" > then prove <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ab=cd ALIGN=MIDDLE  ALT=\"ab=cd\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then there is no solution.  That is because with the given relations, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ab%3C%3Ecd ALIGN=MIDDLE  ALT=\"ab%3C%3Ecd\"   DISABLED_style= \"max-width:90%; height:auto;\" > in general.  It can be proven that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ad=bc ALIGN=MIDDLE  ALT=\"ad=bc\"   DISABLED_style= \"max-width:90%; height:auto;\" > however. </SPAN>\n" );
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