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Solve the logarithmic equation log(x+2)+logx=3log2 algebraically?

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Solve the logarithmic equation log(x+2)+logx=3log2 algebraically?
asked Feb 9, 2015 in PRECALCULUS by anonymous

1 Answer

0 votes

Step 1 :

Logarithmic properties :

If image, then image

image

Step 2 : 

The equation is .

Rewrite the expression using above logarithmic properties.

image

If image, then image

image

Logarithm of negative numbers does not exist.

The solution is image

Solution :

The solution is image

answered Feb 9, 2015 by Thomas Apprentice

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