What the heck did I do wrong in the following problem?

Solve:

Work:

And when I put both sides to base of 2, I get:

Textbook Answer:

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- December 13th 2007, 04:09 PMMacleefLogarithmic/Exponential Equation
What the heck did I do wrong in the following problem?

Solve:

Work:

And when I put both sides to base of 2, I get:

Textbook Answer: - December 13th 2007, 04:32 PMSoroban
Hello, Macleef!

Quote:

Solve: .

Work:

. . . . Right!

Textbook Answer: . . . . also correct!

Your second method was faulty . . .

Take logs, base 2: .

Therefore: .