Question: (4 points) Prove that AB=AB by giving a containment proof (that is, prove that the left side is a subset of the right side and

(4 points) Prove that AB=AB by giving a containment proof (that

(4 points) Prove that AB=AB by giving a containment proof (that is, prove that the left side is a subset of the right side and that the right side is a subset of the left side)

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