College algebra math help needed!!?! please!!!
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College algebra math help needed!!?! please!!!

[From: ] [author: ] [Date: 12-11-20] [Hit: ]
Find AB.Find |AB|.......
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|.

-
|A| = 4*-2 - 3*0
|A| = -8

|B| = -5*3 - 1*-6
|B| = -15+6
|B| = -9

AB =
4 0 * -5 1
3 -2 * -6 3

=

4*-5 0*-6
3*1 -2*3

AB =-20 0
3 -6


|AB| = -20*-6 - 0*3
= 120
1
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