document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=127692>Question 127692</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for x:<BR>\n" );
document.write( "a) log base4 (x+2) + log base4 (n-4)=2<BR>\n" );
document.write( "b) log base2 (x^2-2) - log base2 (1/2x+5)=1 Can someone please help me with these and show me how to check my answers ?????? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #93553 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=93553\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve for x:<BR>\n" );
document.write( "a) log base4 (x+2) + log base4 (x-4)=2<BR>\n" );
document.write( "log base4 (x+2)(x-4) = 2<BR>\n" );
document.write( "(x+2)(x-4) = 4^2<BR>\n" );
document.write( "x^2-2x-24=0<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(x-6)(x+4)=0<BR>\n" );
document.write( "Positive answer:<BR>\n" );
document.write( "x = 6<BR>\n" );
document.write( "---------<BR>\n" );
document.write( "Checking:<BR>\n" );
document.write( "log base4 (8) + log base4 (2) = 2<BR>\n" );
document.write( "log base4 [8*2) = 2<BR>\n" );
document.write( "4^2 = 16<BR>\n" );
document.write( "====================\r<BR>\n" );
document.write( "\n" );
document.write( "b) log base2 (x^2-2) - log base2 (1/2x+5 = 1 <BR>\n" );
document.write( "log base2 [(x^2-2)/((1/2)x+5)] = 1<BR>\n" );
document.write( "[(x^2-2)/((1/2)x+5)] = 2<BR>\n" );
document.write( "x^2-2 = x+10<BR>\n" );
document.write( "x^2-x-12 = 0<BR>\n" );
document.write( "(x-4)(x+3) = 0<BR>\n" );
document.write( "Positive answer:<BR>\n" );
document.write( "x = 4<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Checking:<BR>\n" );
document.write( "log base2(14) - log base2 (7) = 1<BR>\n" );
document.write( "log base2[14/7] = 1<BR>\n" );
document.write( "14/7 = 2<BR>\n" );
document.write( "2 = 2<BR>\n" );
document.write( "=========<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );