# If AB = BA, then prove that ABAB = A^(2)B^(2). The following are the steps involved in proving the above result. Arrange them in the sequential orde

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If AB = BA, then prove that ABAB = A^(2)B^(2). The following are the steps involved in proving the above result. Arrange them in the sequential order.
(A) ABAB =A(BA)B
(B) (AA)(BB)
(C) A(AB)B
(D) A^(2)B^(2)
A. ABCD
B. ACBD

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The required sequential order is ACBD.