question_answer

If A and B are square matrices of order \[n\times n,\] then \[{{(A-B)}^{2}}\]  is equal to

A)  \[{{A}^{2}}-{{B}^{2}}\]                  

B)  \[{{A}^{2}}-2AB+{{B}^{2}}\]

C)  \[{{A}^{2}}+2AB+{{B}^{2}}\]       

D)  \[{{A}^{2}}-AB-BA+{{B}^{2}}\]

E)  None of these