Open Question: Algebra question: Method explaining?

There are two distinct methods to factoring 64 - x^2:

Method #1:

Use difference of perfect squares.

Method #2:

Factor out -1 and then use the difference of perfect squares.

Both methods are correct. Choose one of the methods and factor the expression. In complete sentences explain why you chose the method that you did and include the final factored form of the expression in your explanation.

Can someone please explain what's going on in this question and provide an answer.

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