Suppose $A=\left(\begin{array}{ccc}-4 & a & ba& -5&cb&& 8\end{array} ight)$ where $a, b, c \in \mathbb {R}$. Suppose $u, v \in {-2 3 a. Give all of the eigenvalues of $A$, along with their algebraic and geometric multiplicities. b. $\operatorname(det} A=$ CS.J.082