Question

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

A=
[1   2]
 5    4
B=
[-2 -2]
  0   1

Answer 1

$A= \left[\begin{array}{ccc}1&2\\5&4\\\end{array}\right] e \\B=\left[\begin{array}{ccc}-2&-2\\0&1\\\end{array}\right]\\A-B= \left[\begin{array}{ccc}1-(-2)&2-(-2)\\5-0&4-1\\\end{array}\right]= \left[\begin{array}{ccc}3&4\\5&3\\\end{array}\right] :.$