Matrix Multiplication and Addition with Identity and Zero Matrices

[fazal]

matrix K =
1 3 0
2 1 2

and
Matrix L=
1 3
-1 2

i3 the 3x3 identity matrix, & O the 2x2 zero matrix,
find the following where possible.
1)KL 2)LK c)KI d)O + M


plse assist

 

[HallsofIvy]

What exactly is the problem? Do you know how to multiply matrices?

 

[GoodMax]

I wonder, how is the matrix M defined in the variant "d"?

 

[NoMoreExams]

It's not, that's why it says if possible. Since M wasn't listed, it's not possible :)