Question: When solving the equation $$\frac{3}{x} - \frac{2}{x+2} = \frac{6}{2x+4}$$, what is the least common denominator?
1. **State the problem:** We need to find the least common denominator (LCD) for the equation $$\frac{3}{x} - \frac{2}{x+2} = \frac{6}{2x+4}$$.
2. **Identify denominators:** The denominators are $$x$$, $$x+2$$, and $$2x+4$$.
3. **Factor denominators if possible:** Note that $$2x+4 = 2(x+2)$$.
4. **Find the LCD:** The LCD must include each factor the greatest number of times it appears in any denominator.
- From $$x$$, we have factor $$x$$.
- From $$x+2$$, we have factor $$x+2$$.
- From $$2(x+2)$$, we have factor $$2$$ and $$x+2$$.
5. **Combine factors:** The LCD is $$2 \times x \times (x+2)$$ or $$2x(x+2)$$.
6. **Answer:** The least common denominator is $$2x(x+2)$$.
This corresponds to the choice "2x(x+2)".