Question

Help with a matrice?

http://prntscr.com/4wljld

Answer 1

um, subtract 'like' elements ....

Answer 2

what about the operation is confusing to you?

Answer 3

i dont get it in general

Answer 4

you just subtract the numbers that are in the same position. So since its B-A take 2-1.
1 will be your first number, at the top left of your new matrice.

Answer 5

\[\left[\begin{matrix}a & b \\ c & d\end{matrix}\right] -\left[\begin{matrix}e & f \\ g & h\end{matrix}\right] \\ =\left[\begin{matrix}a-e & b-f \\ c-g & d-h\end{matrix}\right]\]