The Characteristic Equation Of $A = \left( \begin{array} { c c } - 3 & - 2 \\2 & 1\end{array} \right)$

The characteristic equation of $A = \left( \begin{array} { c c } - 3 & - 2 \\2 & 1\end{array} \right)$ is

A) $\lambda ^ { 2 } - 2 \lambda - 4 = 0$
B) $\lambda ^ { 2 } - 2 \lambda - 1 = 0$
C) $\lambda ^ { 2 } - 2 \lambda + 1 = 0$
D) $\lambda ^ { 2 } + 2 \lambda - 1 = 0$
E) $\lambda ^ { 2 } + 2 \lambda + 1 = 0$

Correct Answer:

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