document.write( "Question 743492: Prove: Log(base 5) 7 - Log (base 25) 7 = Log (base 25)7 \n" ); document.write( "
Algebra.Com's Answer #452975 by stanbon(75887)\"\" \"About 
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Prove:
\n" ); document.write( "Log(base 5) 7 - Log (base 25) 7 = Log (base 25)7
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\n" ); document.write( "log(7)/log(5) = 2log25(7)
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\n" ); document.write( "log(7)/log(5) = 2log(7)/log(5^2)
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\n" ); document.write( "log(7)/log(5) = 2[log(7)/2log(5)]
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\n" ); document.write( "log(7)/log(5) = log(7)/log(5)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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