1. **State the problem:** Solve the logarithmic equation $$\log(5x^2) - \log(8) = 1$$.
2. **Recall the logarithm subtraction rule:** $$\log(a) - \log(b) = \log\left(\frac{a}{b}\right)$$.
3. **Apply the rule:**
$$\log\left(\frac{5x^2}{8}\right) = 1$$
4. **Rewrite the logarithmic equation in exponential form:**
Since the base of the logarithm is 10 (common log),
$$\frac{5x^2}{8} = 10^1 = 10$$
5. **Solve for $x^2$:**
$$5x^2 = 8 \times 10 = 80$$
6. **Divide both sides by 5:**
$$x^2 = \frac{80}{5}$$
7. **Show cancellation:**
$$x^2 = \frac{\cancel{80}}{\cancel{5}} = 16$$
8. **Take the square root of both sides:**
$$x = \pm \sqrt{16} = \pm 4$$
9. **Check for extraneous solutions:**
Since $\log(5x^2)$ requires $5x^2 > 0$, both $x=4$ and $x=-4$ are valid.
**Final answer:**
$$x = \pm 4$$
Logarithmic Equation A50Ae4
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.