document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1043511>Question 1043511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the following. eliminate extraneous solutions.<BR>\n" );
document.write( "a 7^2x+1=4^x-2<BR>\n" );
document.write( "b. 4^x= 3+18(4^-x)<BR>\n" );
document.write( "c. 9= log _5(x+100)+6  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #658677 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=658677\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a 7^2x+1=4^x-2<BR>\n" );
document.write( "Ambiguous.<BR>\n" );
document.write( "Is the exponent of 7 2x?  or 2x+1?<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "b. 4^x= 3+18(4^-x)<BR>\n" );
document.write( "No algebraic solution.<BR>\n" );
document.write( "Use graphical or iterative methods.<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "c. 9= log _5(x+100)+6<BR>\n" );
document.write( "What does the underscore mean? </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );