Your answers are correct but you won’t get any marks because your method is not shown. The question specifically asks for prime factorization method. So for example, part a, do prime factorization for 64 which is 2 to the power of 6 ie 2x2x2x2x2x2. So to find a square of 2 to the power of six, it is just 2 to the power of 3 which when evaluated is 8.

You can follow the same method for the rest! Do ask me for clarification if you need help!!:)