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- Dec 15th 2009, 10:11 AM #1

- Dec 15th 2009, 11:37 AM #2
1. From the LHS of the equation you know

2. Plug in this term into the RHS:

3. Consequently the given equation

becomes

4. Now use both sides as exponents to the base 3:

Square both sides and solve the quadratic equation for x.

Check afterwards if both solutions are valid.