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OpenStudy (anonymous):
find determinants of the matrix: 3 8 -7 0 -5 4 8 1 6
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OpenStudy (amistre64):
the quicker method is to copy the first 2 columns onto the end of it and multiply up and down the diags similar to a 2x2
OpenStudy (amistre64):
-( ) 3 8 -7 3 8 0 -5 4 0 -5 8 1 6 8 1 +( ) the top has opposite values and then you add up all the numbers
OpenStudy (anonymous):
can you finish it out please
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