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2007-12-16 07:20:31 · 3 answers · asked by Anonymous in Science & Mathematics Mathematics

3 answers

It's 6-(-1) = 7.
In general the determinant of
a b
c d
is ad - bc.

2007-12-16 07:26:43 · answer #1 · answered by steiner1745 7 · 0 0

2 1
-1 3
determinant=2(3) - (1)(-1)=6+1=7

2007-12-16 15:25:55 · answer #2 · answered by cidyah 7 · 0 0

6-(-1)=7

2007-12-16 15:23:46 · answer #3 · answered by Joey 1 · 0 0

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