Resolver det [[1, - 4, - 1], [2, - 5, 2], [- 3, 2, 1]] = | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$|\begin{matrix}1&-4&-1\\ 2&-5&2\\ -3&2&1\end{matrix}|=$$