document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546006>Question 546006</A>: <I><SPAN STYLE=\"word-break: break-all;\"> log2(x + 2) + log2(x - 4) = 4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355844 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=355844\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve for x<BR>\n" );
document.write( "log2(x + 2) + log2(x - 4) = 4<BR>\n" );
document.write( "log2[(x+2)(x-4)]=4<BR>\n" );
document.write( "change to exponential form: Base(2) raised to log of number(4)=number[(x+2)(x-4)]<BR>\n" );
document.write( "..<BR>\n" );
document.write( "2^4=(x+2)(x-4)<BR>\n" );
document.write( "16=x^2-2x-8<BR>\n" );
document.write( "x^2-2x-24=0<BR>\n" );
document.write( "(x-6)(x+4)=0<BR>\n" );
document.write( "x=6<BR>\n" );
document.write( "or<BR>\n" );
document.write( "x=-4 (reject, (x+2)>0) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );