Question

alguém??? calcule os determinantes​

Answer 1

Explicação passo-a-passo:

$\left[\begin{array}{ccc}8&\sqrt{3}\\\sqrt{3}&-7\end{array}\right] \\ \lef\left|\begin{array}{ccc}8&\sqrt{3}\\\sqrt{3}&-7\end{array}\right| \\ \left\\ \\ 8.(-7)-\sqrt{3} \sqrt{3}$

$-56-3\\ -59$

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$\left[\begin{array}{ccc}-4&6&-9\\-3&4&6\\-1&3&8\end{array}\right] \\ \left|\begin{array}{ccc}-4&6&-9\\-3&4&6\\-1&3&8\end{array}\right| \\ \left|\begin{array}{ccc}-4&6&-9\\-3&4&6\\-1&3&8\end{array}\right| \left\begin{array}{ccc}-4&6\\-3&4\\-1&3\end{array}\right \\ (-4).4.8+6.6.(-1)+(-9).(-3).3-((-1).4.(-9)+3.6.(-4)+8.(-3).6) \\ -128-36+81-(36-72-144) \\ -128-36+81-(-180) \\ -128-36+81+180 = 97$