(3) \( \left(\frac{m}{2}\right)^{-3} \)

Let's break it down! The expression \( \left(\frac{m}{2}\right)^{-3} \) can be rewritten by flipping the base and changing the sign of the exponent. This gives us \( \left(\frac{2}{m}\right)^{3} \). Now we can simplify it further: \( \frac{2^3}{m^3} \) or \( \frac{8}{m^3} \). So, the final simplified form is \( \frac{8}{m^3} \). When dealing with negative exponents, remember the basic rule: \( a^{-n} = \frac{1}{a^n} \). This turns what could be a tricky calculation into an easy-to-follow process. Just flip that fraction for any negative exponent and you're good to go!