To solve the equation \( x^8 - 5 = -3 \), we can start by adding 5 to both sides of the equation:
\[ x^8 - 5 + 5 = -3 + 5 \]
This simplifies to:
\[ x^8 = 2 \]
Now, to solve for \( x \), we take the eighth root of both sides:
\[ x = \sqrt[8]{2} \]
The numerical approximation of \( \sqrt[8]{2} \) is a positive number, approximately equal to \( 1.0905 \).
Given the available choices:
- \( 1 \)
- \( -16 \)
- \( 16 \)
- \( -64 \)
None of these options are correct, as \( \sqrt[8]{2} \) is not equal to any of those values. The answer lies outside the provided options. Therefore, the correct answer is that there are no errors; the answer is not on this list.