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"If A" = ({:(3, -6),(-1, 2):}) " and B" ...

`"If A" = ({:(3, -6),(-1, 2):}) " and B" = ({:(2, 6),(1, 3):})` are two matrices, then find AB + BA.
(a) I (b) O (c) A (d) B

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`AB = ({:(3, -6),(-1, 2):}) ({:(2, 6),(1, 3):})`
`= ({:(6-6, 18-18),(-2+2, -6+6):}) = ({:(0, 0),(0, 0):})`
`BA= ({:(2, 6),(1, 3):})({:(3, -6),(-1, 2):})`
`=({:(6-6, -12+12),(3-3, -6+6):}) = ({:(0, 0),(0, 0):})`
AB+BA = 0.
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PEARSON IIT JEE FOUNDATION-MATRICES-EXERCISE CONCEPT APPLICATION (LEVEL 3)
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