document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=295270>Question 295270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how to express the following as a single log?\r<BR>\n" );
document.write( "\n" );
document.write( "1. log7+ log4- log2=\r<BR>\n" );
document.write( "\n" );
document.write( "2. 2log(ab)- 3log a+ 2=\r<BR>\n" );
document.write( "\n" );
document.write( "3. log (X2 - 1) - LOG (X+1) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #212815 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=212815\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Remember:<BR>\n" );
document.write( "log a - log b = log a/b<BR>\n" );
document.write( "log a + log b = log ab<BR>\n" );
document.write( "alogb = log b^a<BR>\n" );
document.write( ".<BR>\n" );
document.write( "1. log7+ log4- log2=<BR>\n" );
document.write( "log(7*4) - log 2<BR>\n" );
document.write( "log 28 - log 2<BR>\n" );
document.write( "log 28/2<BR>\n" );
document.write( "log 14<BR>\n" );
document.write( ".<BR>\n" );
document.write( "2. 2log(ab)- 3log a+ 2=<BR>\n" );
document.write( "log (ab)^2 - log a^3 + 2<BR>\n" );
document.write( "log (a^2b^2) - log a^3 + 2<BR>\n" );
document.write( "log (a^2b^2)/a^3 + 2<BR>\n" );
document.write( "log (b^2/a) + 2<BR>\n" );
document.write( ".\r<BR>\n" );
document.write( "\n" );
document.write( "3. log (X2 - 1) - LOG (X+1)<BR>\n" );
document.write( "log (x^2-1)/(x+1)<BR>\n" );
document.write( "factoring the numerator:<BR>\n" );
document.write( "log (x-1)(x+1)/(x+1)<BR>\n" );
document.write( "log (x-1)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );