## Question

###### Use the diagonal expansion formula to evaluate the determinants. $$\left|\begin{array}{rrr} 4 & 1 & -5 \\ 1 & 2 & -6 \\ -3 & -1 & 7 \end{array}\right|$$

Use the diagonal expansion formula to evaluate the determinants. $$\left|\begin{array}{rrr} 4 & 1 & -5 \\ 1 & 2 & -6 \\ -3 & -1 & 7 \end{array}\right|$$

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