QUESTION

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(4 points) If \[ A=\left[\begin{array}{cc} -5 & 6 \\ 1 & -5 \end{array}\right] \] then \[ A^{-1}=\left[\begin{array}{l|c} \hline-5 / 19 & \# \\ \hline-1 / 19 & \# \\ \hline \end{array}\right. \] Given $\vec{b}=\left[\begin{array}{l}4 \\ 3\end{array}\right]$, solve $A \vec{x}=\vec{b}$
(4 points) If \[ A=\left[\begin{array}{ccc} -2 & -2 & 9 \\ -5 & -4 & 22 \\ 1 & 1 & -5 \end{array}\right] \] then Given $\vec{b}=\left[\begin{array}{c}-4 \\ 2 \\ -2\end{array}\right]$, solve $A \vec{x}=\vec{b}$

Public Answer

8EEJT0 The First Answerer