Question

Cálculos de Matemática

Answer 1

20) Letra A

$\begin{gathered}\left(\begin{array}{ccc} - 3&5&2\\6&4&8\end{array}\right)~\begin{matrix}\end{matrix}\end{gathered} + \begin{gathered}\left(\begin{array}{ccc} - 8&-9&12\\45&6& - 3\end{array}\right)~\begin{matrix}\end{matrix}\end{gathered} \\ \\ - \begin{gathered}\left(\begin{array}{ccc}( - 3) + ( - 8)&5 + ( - 9)&2 + 12\\6 + 45&4 + 6&8 + ( - 3)\end{array}\right)~\begin{matrix}\end{matrix}\end{gathered} \\ \\ \begin{gathered}\left(\begin{array}{ccc} - 11&-4&14\\51&10&5\end{array}\right)~\begin{matrix}\end{matrix}\end{gathered}$

$\mathcal{Bons \: estudos } \\ \displaystyle\int_ \empty ^ \mathbb{C}     \frac{ - b \: ± \:  \sqrt{ {b}^{2} - 4 \times a \times c } }{2 \times a} d{ t } \boxed{ \boxed{ \mathbb{\displaystyle\Re}\sf{ \gamma  \alpha }\tt{ \pi}\bf{ \nabla}}}$