If the following matrix
$ \begin{bmatrix} 40 & -29 & -11 \\ -18 & 30 & -12 \\ 26 & 24 & -50 \end{bmatrix} $ has a complex eigen value $\lambda\neq 0$, then matrix has must have an eigenvalue
a. $\lambda +20$
b. $\lambda-20$
c. $20- \lambda$
d. $-20- \lambda$
Can anyone help me please....