a) \( 2^{\frac{4}{2}} \)

Did you know that the term "exponent" stems from the Latin word "exponere," meaning "to put forth"? Exponents make calculations much easier, especially when dealing with large numbers, as they represent repeated multiplication. For example, in your expression \( 2^{\frac{4}{2}} \), you're essentially squaring the base 2, which leads to a super simple result of 4! Now, if you're ever stuck on an expression like this, remember to simplify any fractions in the exponent first. In this case, \( \frac{4}{2} \) simplifies to 2, turning your calculation into \( 2^2 \). Just don't forget to double-check your calculations – it's easy to rush and misinterpret those pesky fractions!