College algebra math help needed? Please

completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part.

Consider the following.
A =


4 0
3 –2


, B =


–5 1
–6 3



Find |A|.



Find |B|.



Find AB.



Find |AB|.

Rule

If
A=
a b
c d

then
|A| = ad - bc