document.write( "Question 390652: how do i solve (log base 4 (x+3))+(log base 4 (x-3))=2? \n" ); document.write( "
Algebra.Com's Answer #277042 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
log base 4 (x+3))+(log base 4 (x-3))=2
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\n" ); document.write( "log4(x+3) + log4(x-3) = 2
\n" ); document.write( "-------
\n" ); document.write( "log4[x^2-9] = 2
\n" ); document.write( "---
\n" ); document.write( "base = 4
\n" ); document.write( "exponent = 2
\n" ); document.write( "result = x^2-9
\n" ); document.write( "---
\n" ); document.write( "Write in exponential form:
\n" ); document.write( "x^2-9 = 4^2
\n" ); document.write( "---
\n" ); document.write( "x^2 = 16+9
\n" ); document.write( "---
\n" ); document.write( "x^2 = 25
\n" ); document.write( "---
\n" ); document.write( "Positive solution:
\n" ); document.write( "x = 5
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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