The image shows the expression $a^{-4}$, which is being rewritten as a fraction.

To simplify this:

• The negative exponent rule states that $a^{-n} = \frac{1}{a^n}$.
• Applying this to $a^{-4}$, we get:

$a^{-4} = \frac{1}{a^4}$

This is the result shown in the image.

Would you like further explanation on exponent rules or related topics? Here are 5 related questions you might find interesting:

1. How do you simplify expressions with multiple negative exponents?
2. What happens if the base $a$ is a fraction or a negative number?
3. How do you simplify an expression like $(a^{-4})(a^2)$?
4. Can you explain the product of powers rule?
5. How do you work with fractional exponents?

Tip: Negative exponents represent reciprocals, which is why expressions like $a^{-n}$ become fractions with positive exponents!