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Respondido

Calcule o determinante da matriz

A=(1 2)
(-5 -3)

Resposta :

CyberKiritogo

[tex]\large\boxed{\begin{array}{l}\rm A=\begin{pmatrix}\rm\,\,1&\rm\,2\\\rm\!\!-5&\rm\!\!-3\end{pmatrix}\\\rm det\,A=1\cdot(-3)-2\cdot(-5)\\\rm det\,A=-3+10\\\rm det\,A=7\end{array}}[/tex]

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