Of the products AB,BA,A² and B²,which ones are possible for the given matrices? $$A = \left[ \begin{array} { c } - 3 \ 1 \ - 7 \end{array} \right] , B = \left[ \begin{array} { l l l } 7 & 1 & 6 \end{array} \right]$$ A)B² only B)A² only C)BA only D)AB only E)AB and BA only

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AB and BA are possible because the number of columns of A is equal to the number of rows of B. A² and B² are not possible because the number of columns of A is not equal to the number of rows of A and the number of columns of B is not equal to the number of rows of B, respectively.

Of the Products AB,BA,A2 and B2,which Ones Are Possible for the Given

Of the Products AB,BA,A² and B²,which Ones Are Possible for the Given