document.write( "Question 461820: Hey,\r
\n" ); document.write( "\n" ); document.write( "Quick question. I have the following problem:\r
\n" ); document.write( "\n" ); document.write( "Using properties of logarithms, find the exact value of the expression:\r
\n" ); document.write( "\n" ); document.write( "\"+log%282%2C+25%29+log%283%2C+27%29+log%285%2C+8%29+\"\r
\n" ); document.write( "\n" ); document.write( "I know Change-of-Base formula, \"+log+%28a%2C+M%29+=+%28log%28b%2C+M%29%29%2Flog%28b%2C+a%29\" and that \"+log+%28a%2C+a%5Er%29=r\", but I don't know how to get to the answer, which is 18.\r
\n" ); document.write( "\n" ); document.write( "A little explanation of the steps would be much appreciated!\r
\n" ); document.write( "\n" ); document.write( "Thanks,\r
\n" ); document.write( "\n" ); document.write( "Jessica
\n" ); document.write( "

Algebra.Com's Answer #316620 by asuar010(338)\"\" \"About 
You can put this solution on YOUR website!
the process is like a puzzle lol\r
\n" ); document.write( "\n" ); document.write( "first letts work with the simple one which is \"+log%283%2C+27%29\" and the answer is 3 as you know because \"3%5E3\" is 27...\r
\n" ); document.write( "\n" ); document.write( "then convert the rest of the equation and substitute and should look like this:\r
\n" ); document.write( "\n" ); document.write( "\"+%28log%2825%29%2Flog%282%29%29+%2A+3+%2A+%28log%288%29%2Flog%285%29%29\" then using basic rules of multiplication of fraction rewrite as:\r
\n" ); document.write( "\n" ); document.write( "\"+%28log%2825%29%2Flog%285%29%29+%2A+3+%2A+%28log%288%29%2Flog%282%29%29\" then go backwards on the second formula you wrote and the expression should be simplified as:\r
\n" ); document.write( "\n" ); document.write( "\"+log%285%2C+25%29%2A3%2Alog%282%2C+8%29+\" which becomes 2*3*3=18...\r
\n" ); document.write( "\n" ); document.write( "nice isn't?
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