SOLUTION: Evaluate: |12 -9| |-3 5|

Algebra.Com
Question 636374: Evaluate: |12 -9|
|-3 5|
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Solved by pluggable solver: Finding the Determinant of a 2x2 Matrix

If you have the general 2x2 matrix:



the determinant is:

So this means that



Note: the vertical bars denote a determinant.


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So in this case the determinant of is:





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Answer:

So which means that the determinant of the matrix is 33
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