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Question
Evaluate the following determinant:
$$ det \left( \begin{matrix}1&0&-1&0\\4&3&0&0\\1&2&0&1\\8&0&-2&5\end{matrix} \right) $$
Answer
$$ det \left( \begin{matrix}1&0&-1&0\\4&3&0&0\\1&2&0&1\\8&0&-2&5\end{matrix} \right) = -43 $$
Explanation
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