document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319748>Question 319748</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If x+iy=(a+ib)*(a+ib)*(a+ib) then show that x/a+y/b=4(a^2-b^2)\r<BR>\n" );
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document.write( "PLZ help!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #230299 by </B><A HREF=/tutors/aboutme.mpl?userid=J2R2R><B>J2R2R(94)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=J2R2R><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=J2R2R><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=230299\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+iy = (a+ib)^3 = a^3 + 3a^2ib + 3ai^2b^2 + i^3b^3 = (a^3 - 3ab^2) + (3a^2b - b^3)i\r<BR>\n" );
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document.write( "Comparing real and imaginary components:\r<BR>\n" );
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document.write( "x = a^3 - 3ab^2; x/a = a^2 - 3b^2<BR>\n" );
document.write( "y = 3a^2b - b^3; y/b = 3a^2 - b^2\r<BR>\n" );
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document.write( "x/a + y/b = 4(a^2 - b^2) </SPAN>\n" );
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