1. **State the problem:** Solve the equation $$249 \cdot 3^{x+2} = \frac{1}{9}$$ for $x$.
2. **Recall the properties of exponents:**
- $3^{x+2} = 3^x \cdot 3^2$
- $\frac{1}{9} = 3^{-2}$ since $9 = 3^2$
3. **Rewrite the equation using these properties:**
$$249 \cdot 3^x \cdot 3^2 = 3^{-2}$$
4. **Simplify the constants:**
$$249 \cdot 9 \cdot 3^x = 3^{-2}$$
$$2241 \cdot 3^x = 3^{-2}$$
5. **Isolate $3^x$:**
$$3^x = \frac{3^{-2}}{2241}$$
6. **Express the right side as a single power of 3 if possible:**
Since $2241$ is not a power of 3, we keep it as is.
7. **Take the logarithm base 3 of both sides:**
$$x = \log_3 \left( \frac{3^{-2}}{2241} \right) = \log_3(3^{-2}) - \log_3(2241) = -2 - \log_3(2241)$$
8. **Final answer:**
$$\boxed{x = -2 - \log_3(2241)}$$
Solve Exponent F06Cca
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