1. **State the problem:** Simplify the expression involving powers of $g$ given as $$\frac{g(x)}{g^9} = \frac{4}{g^9}$$ and related expressions using exponent rules.
2. **Recall the exponent rules:**
- Power of a Product: $ (ab)^m = a^m b^m $
- Power of a Power: $ (a^m)^n = a^{mn} $
- Quotient of Powers: $ \frac{a^m}{a^n} = a^{m-n} $
- Product of Powers: $ a^m \cdot a^n = a^{m+n} $
3. **Analyze the given expression:**
Given $$\frac{g(x)}{g^9} = \frac{4}{g^9}$$ implies $g(x) = 4$ since the denominators are equal.
4. **Simplify the expression $\frac{1}{g^9} = g$:**
Rewrite as $$g \cdot g^9 = 1$$
Using Product of Powers:
$$g^{1+9} = g^{10} = 1$$
5. **Solve for $g$:**
Since $g^{10} = 1$, $g$ is a 10th root of unity. The simplest real solution is:
$$g = 1$$
6. **Check the expression $7x \cdot \frac{1}{g^9} = \frac{4}{g^9}$:**
Substitute $\frac{1}{g^9} = g$:
$$7x \cdot g = 4g$$
Divide both sides by $g$ (assuming $g \neq 0$):
$$\cancel{g} \cdot 7x = 4 \cancel{g}$$
$$7x = 4$$
7. **Solve for $x$:**
$$x = \frac{4}{7}$$
**Final answers:**
$$g = 1$$
$$x = \frac{4}{7}$$
Exponent Properties C40C9D
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