document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=337910>Question 337910</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Problem to solve is: z^1/2 - 4z^1/4 + 4 = 0 \r<BR>\n" );
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document.write( "so I let u=z^1/4 and I let u^2=z^1/2\r<BR>\n" );
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document.write( "Then I get u^2-4u+4=0 which factors to (u-2)^2\r<BR>\n" );
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document.write( "So U-2=2\r<BR>\n" );
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document.write( "U=2\r<BR>\n" );
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document.write( "My question is how do I check this.  I am confused.  May I please ask for help?\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #242255 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=242255\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2 = z^(1/4) ___ 16 = z\r<BR>\n" );
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document.write( "16^(1/2) - 4[16^(1/4)] + 4 = 0 ___ does this check? </SPAN>\n" );
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