Question

Dadas as matrizes A e B a alternativa que representa A- B, é:

Answer 1

$A = \left[\begin{array}{cc}1&2\\5&4\end{array}\right] B = \left[\begin{array}{cc}-2&-2\\0&1\end{array}\right] A - B = \left[\begin{array}{cc}1-(-2)&2-(-2)\\0-5&1-4\end{array}\right]$

Answer 2

1-(-2):3 2-(-2):4
5-0:5 4-1:3
A-B: 3 4
5 3