Given the function:
![f(x)=\sqrt[]{x}-1](https://img.qammunity.org/2023/formulas/mathematics/college/rzppptk329480eet3iot9qr8lws9l8egt8.png)
The domain of the function is all the possible value of x which can be substituted into the function
The given function is a square root function
So, the value under the square root must be greater than or equal to zero
So,

So, the answer will be Domain =
![undefined]()