A) A
B) B
C) AB
D) \[{{B}^{2}}\]
Correct Answer: D
Solution :
Given, \[AB=A\Rightarrow B=\text{ }I\] and \[BA=B\Rightarrow A=I\] Now, \[{{A}^{2}}=A.A\] \[=AB.A\] \[=A.BA\] \[=I.B\] \[=B.B={{B}^{2}}\]You need to login to perform this action.
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