college algebra matrices

therealhybrid

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Jul 2, 2014
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I need help finding the inverse for
|-1 2|
|-2-1|


|-1 -2|
|3 4|


And this one "solce each system by using the inverse of the coeffiecient matrix"
-x+y=1
2x-y=1
 
I need help finding the inverse for
|-1 2|
|-2-1|


|-1 -2|
|3 4|


And this one "solce each system by using the inverse of the coeffiecient matrix"
-x+y=1
2x-y=1
What methods do you know for finding the inverse of a matrix?
 
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