document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1091459>Question 1091459</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all real solutions x to 4^x - 2^x = 56. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #705856 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=705856\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4^x - 2^x = 56<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "2^(2x) - 2^x - 56 = 0<BR>\n" );
document.write( "------<BR>\n" );
document.write( "(2^x + 7)*(2^x - 8) = 0<BR>\n" );
document.write( "2^x = -7  NG<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "2^x = 8<BR>\n" );
document.write( "x = 3\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );