Question

plz solve this A is equal to this value​

Answer 1

Answer:

A=|A|=5.1-(-3).2=5+6=11

Answer 2

Given :-

$A=\left[\begin{array}{ccc}1&2\\-3&5\end{array}\right]$

Then to find negative of the matrix, multiply all the nubers of the matrix with -1.

We Get :-

$-A=\left[\begin{array}{ccc}-1&-2\\3&-5\end{array}\right]$