Answer
Both exponents are negative, and we know we can write $x^{-y}$ as $1/(x^y)$ as long as $y\ne0$. Thus, $2x^{-5}$ is the same as $2/x^5$.
Work Step by Step
Also, $2x^{-3/4}$ can be written as $2/(x^{3/4})$.
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