How do you multiply #((1, -2), (-4, 3))# with #((-5, 2))#?
These matrices are not compatible and cannot be multiplied.
They can only be multiplied the other way round to give:
These matrices are not compatible as they are shown.
A (2x2) matrix cannot multiply by a (1x2) matrix.
But, a (1x2) matrix can multiply by a (2x2) matrix to give a (1x2)
The red row must multiply by each of the columns in the second matrix.