document.write( "Question 435693: \log_{2} x + \log_{2} (x+4) = \log_{2} 7 \n" ); document.write( "

Algebra.Com's Answer #301533 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Need to be familiar with the Properties of Logarithms\r
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document.write( "In this example:
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document.write( " 1 = x(x+4)/7     
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document.write( "  7 = x^2 + 4x
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document.write( " x^2 + 4x - 7 = 0
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document.write( "       x = 1.3166   |Tossing out negative solution \r
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