Let

|1 −2 1| = A

|4 −2 3|

|−3 2| = B

| 1 5 |

and

|−1 3 5 |

| 2 4 −1 | = C

| 6 −2 3 |

Using the matrices above labelled A, B, and C above, either calculate the matrices described below, or explain why it is not possible to do so.

a) BA

b) AC − B

c) BAC

*please give ur workings and a clear answer so i can understand it.