The value of the expression $x^2 - 2(x - y)$ for $x = 8$ and $y = 1$ is 50.

Would you like a detailed breakdown of how this was calculated or have any questions?

Here are 5 related questions:

1. How would the expression change if $y = 3$ instead?
2. What happens if we switch the signs in the expression to $x^2 + 2(x - y)$?
3. How does the expression behave if both $x$ and $y$ are negative values?
4. How can we express $x^2 - 2(x - y)$ in a factored form?
5. What is the result of the expression if $x = 0$ and $y = 0$?

Tip: When solving expressions with variables, substituting the values and simplifying step by step helps avoid errors.