Final answer:
The expression 2x^-8 is already in factored form as 2/x^8 and cannot be simplified further by factoring.
Step-by-step explanation:
The expression given is 2x^-8 which we need to factor.
Since the exponent is negative, we can write this expression as 2/x^8.
However, the expression is already in its simplest form with the constant 2 being factored out.
There are no common factors or terms that can be factored further in the expression 2/x^8.