document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=925788>Question 925788</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How does (i+1)/(i-1) = -i </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561763 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=561763\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How does (i+1)/(i-1) = -I<BR>\n" );
document.write( "Multiply the NUM and DEN of the fraction by the conjugate of the DEN i+1<BR>\n" );
document.write( "---<BR>\n" );
document.write( "(i+1)*(i+1)/((i-1)*(i+1)<BR>\n" );
document.write( "= (i^2 + 2i + 1)/(i^2 - 1)<BR>\n" );
document.write( "= (-1 + 2i + 1)/(-1 -1)<BR>\n" );
document.write( "= 2i/(-2)<BR>\n" );
document.write( "= -i </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );