Question

1

Answer 1

Answer:

||| First row: 11 -20 23 ||| Second row: -21 5 -24 ||| Third row: 6 9 -14 |||

Step-by-step explanation:

I wish I could explain it better, but all I did was plug it into matrix A on:

https://atozmath.com/matrix.aspx?q=minor

I pressed "find" without changing any of the settings, and scrolled down until I saw what was in the attached screenshot.

Each of the rows correspond to the first, second, and third answers, as you can see.

I hope this helps!