What is the answer to 54 & 55?
\(\frac{d}{dx} [x^{a}] = ax^{a-1} \\ \frac{d}{dx} [x^{-4}] = -4x^{-5} \\ \frac{d}{dx} [x^{1/5}] = 1/5 \cdot x^{-4/5}\)
