document.write( "Question 670687: Find the exact solution using common logarithms.
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\n" ); document.write( "log(x^2 + 4) − log(x + 2) = 2 + log(x − 2) \n" ); document.write( "

Algebra.Com's Answer #417052 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,
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document.write( "log(x^2 + 4) - log(x + 2) = 2 + log(x - 2)
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document.write( "log (x^2 + 4)/(x+2)(x-2) = 2
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document.write( "  100 =  (x^2 + 4)/(x+2)(x-2)
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document.write( "  100(x^2-4) = x^2 + 4
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document.write( "   99x^2 = 404
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document.write( "     x^2 = 404/99
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document.write( "     x = 2.02    (minus soluton extraneous)
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