512(8)-х2

To simplify the expression \( 512(8) - x^2 \), we first calculate \( 512(8) \).

The expression \( 512(8) \) means multiplying 512 by 8:

\[ 512 \times 8 = 4096 \]

Now, substituting this back into the expression gives:

\[ 4096 - x^2 \]

So, the simplified expression is:

\[ 4096 - x^2 \]