Answer:

Explanation:
To find the inverse of a function, we can list out the operations done unto x and invert their opposites.
The operations for the function f(x) = (x − 2)² are:
- subtract 2
- square
So, the operations for its inverse function will be:
- square root
- add 2
Finally, we can represent this in equation form:

However, since there is a domain restriction on the principal square root function, we have to add a ± sign in front of the
.

Further Note
Additionally, we know that x must also be positive or 0, as negative numbers do not result in a real output when square rooted, though putting a function's inherent domain restriction after the its definition is not always necessary:
