1. **State the problem:** Solve the equation $$4^{x^2} = 8^x$$ for $x$.
2. **Rewrite the bases as powers of 2:**
Since $4 = 2^2$ and $8 = 2^3$, rewrite the equation as:
$$ (2^2)^{x^2} = (2^3)^x $$
3. **Apply the power of a power rule:**
$$ 2^{2x^2} = 2^{3x} $$
4. **Set the exponents equal:**
Since the bases are the same and nonzero, the exponents must be equal:
$$ 2x^2 = 3x $$
5. **Solve the quadratic equation:**
Bring all terms to one side:
$$ 2x^2 - 3x = 0 $$
Factor out $x$:
$$ x(2x - 3) = 0 $$
6. **Find the roots:**
Set each factor equal to zero:
- $x = 0$
- $2x - 3 = 0 \Rightarrow 2x = 3 \Rightarrow x = \frac{3}{2}$
7. **Final answer:**
$$ x = 0 \text{ or } x = \frac{3}{2} $$
Exponential Equation 85E25D
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