ashleyestrada1
ashleyestrada1
30-11-2020
Mathematics
contestada
How do I find matrices
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Аноним
Аноним
30-11-2020
Multiply a by the determinant of the 2×2 matrix that is not in a's row or column.
Likewise for b, and for c.
Sum them up, but remember the minus in front of the b.
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