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QUESTION Evaluate the following determinants:

$\left|\begin{array}{ccc}2&4&6\\1&3&2\\-1&5&7\end{array}\right|,
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\left|\begin{array}{ccc}1&7&8\\-2&4&3\\1&9&0\end{array}\right|,
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\left|\begin{array}{cccc}4&5&6&1\\2&4&0&7\\0&0&1&3\\2&1&0&3\end{array}\right|.$

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ANSWERS

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34\hspace{1.5cm}-182\hspace{1.5cm}162



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