Question

Plz explain how to do this

Answer 1

Here is the definition of a negative exponent.

For any non-zero value of a,

$a^{-n} = \dfrac{1}{a^n}$

Look at your problem and follow the definition.

$4^{-3} = \dfrac{1}{4^3}$

Since 4^3 = 4 * 4 * 4 = 64, we can now write:

$4^{-3} = \dfrac{1}{4^3} = \dfrac{1}{4 \times 4 \times 4} = \dfrac{1}{64}$