Which of the following are examples of empty set? `{x : x^2-2=0\ a n d\ x` is rational`}`

Explanation

To determine whether the set defined by `{x : x^2 - 2 = 0 and x is rational}` is an empty set, we will follow these steps:

### Step 1: Solve the equation \(x^2 - 2 = 0\)
We start by solving the equation \(x^2 - 2 = 0\).

\[ x^2 = 2 \]
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