1. The problem asks to evaluate the expressions when $y = e$ and $x = e$. 2. Since both $y$ and $x$ are equal to the constant $e$, which is approximately 2.718, this means $y = e$ and $x = e$ are given values. 3. There is no further expression or equation to solve or simplify based on the input. 4. Therefore, if the problem intended to state values $y = e$ and $x = e$, these are the values for $y$ and $x$ respectively. Final answer: $y = e$ and $x = e$ where $e \approx 2.718$