Question

Find the product, if possible.
AB, if A= [0 -5 10] B= [-9]
[-1 6 -9] [0]
, [4]

Answer 1

0.-9 + -5.0 + 10.4 = 40

9-36 = -27

[ 40]
[-27] i think

Answer 2

I am not certain about what I'm looking at.

if A= [0 -5 10] B= [-9]

What does the rest mean? Doing matrix multiplication is easy enough, but the form in which it is written is a bit confusing.