document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=87938>Question 87938</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve each equation below by making the appropriate substitution. Be sure to check answer(s): PLEASE HELP ME!\r<BR>\n" );
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document.write( "A)X^-2+X^-1-56=0<BR>\n" );
document.write( "    U=<BR>\n" );
document.write( "    u^2=<BR>\n" );
document.write( "    Answer:\r<BR>\n" );
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document.write( "B)x^2/3-x^1/3-12=0<BR>\n" );
document.write( "    U= <BR>\n" );
document.write( "    U^2=<BR>\n" );
document.write( "    Answer: </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #63850 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=63850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A)X^-2+X^-1-56=0<BR>\n" );
document.write( "    U=x^-1<BR>\n" );
document.write( "    u^2=x^-2<BR>\n" );
document.write( "    Answer:u^2+u-56 = 0<BR>\n" );
document.write( "(u+8)(u-7)=0<BR>\n" );
document.write( "u=-8 or u=7<BR>\n" );
document.write( "x^-1=-8 or x^-1=7<BR>\n" );
document.write( "x=-1/8 or x=1/7<BR>\n" );
document.write( "--------------------------\r<BR>\n" );
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document.write( "B)x^2/3-x^1/3-12=0<BR>\n" );
document.write( "    U= x^(1/3)<BR>\n" );
document.write( "    U^2=x^(2/3)<BR>\n" );
document.write( "    Answer:u^2+u-12=0<BR>\n" );
document.write( "(u+4)(u-3)=0<BR>\n" );
document.write( "u=-4 or u=3<BR>\n" );
document.write( "x^(1/3)=-4 or x^(1/3)=3<BR>\n" );
document.write( "x = -64 or x=27<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );