Answer
$$\frac{e^{2y}}{y^4}$$
Work Step by Step
Simplifying the given expression using the rules of radicals/exponents, we find:
$$\left(\frac{e^y}{y^2}\right)^2 \\ \frac{\left(e^y\right)^2}{y^4} \\ \frac{e^{2y}}{y^4}$$
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