document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=276106>Question 276106</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i am supposed to show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent. i dont understand how to show this. please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #201284 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=201284\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i am supposed to show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent. i dont understand how to show this. please help<BR>\n" );
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document.write( "Pick numbers for x and y see if it's true.<BR>\n" );
document.write( "x = y = 1 is the easiest<BR>\n" );
document.write( "(1+1)^-2 = 1/4<BR>\n" );
document.write( "1^-2 + 1^-2 = 2<BR>\n" );
document.write( "They're not equal, so it's disproven.<BR>\n" );
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