Answer:
A: Paul
B: (x^-4)^2 = x^-8, not x^-2
Explanation:
Following the laws of indicides, when you have a power inside the bracket and a power outside the bracket, you multiply the powers.
Therefore the resulting power of x will be -4 * 2.
-4 * 2 = -8.
Paul added -4 and 2 instead of multiplying them, hence his answer of -2.