document.write( "Question 1111530: ln(x − 5) + ln(x + 6) = 1
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Algebra.Com's Answer #726541 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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ln(x − 5) + ln(x + 6) = 1
\n" ); document.write( "we can write it as a single ln
\n" ); document.write( "ln((x-5)(x+6)) = 1
\n" ); document.write( "FOIL
\n" ); document.write( "ln(x^2+x-30) = 1
\n" ); document.write( "antilog,
\n" ); document.write( "x^2 + x - 30 = e
\n" ); document.write( "x^2 + x - 30 ~ 2.7183
\n" ); document.write( "x^2 + x - 30 - 2.7183 = 0
\n" ); document.write( "x^2 + x - 32.7183 = 0
\n" ); document.write( "using the quadratic formula, the positive solution
\n" ); document.write( "x = 5.2418
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\n" ); document.write( "Check on calc ln(5.2418-5) + ln(5.2418+6) = .9999946 ~ 1 \n" ); document.write( "

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