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If AB = A and BA = B, then B² is equal to

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Correct option is A

Since BA = B∴(BA)B = BB = B2⇒B(AB) = B2⇒BA=B2 ∵AB=A⇒B=B2 (∵BA = B)

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If AB = A and BA = B, then B2 is equal to

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If AB = A and BA = B, then B² is equal to