1. Tardigrade
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  3. Mathematics
  4. If M=[1 2 2 3] and M2-λ M-I2=O, then λ equals -

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Q. If $M=\begin{bmatrix}1 & 2 \\ 2 & 3\end{bmatrix}$ and $M^2-\lambda M-I_2=O$, then $\lambda$ equals -

Matrices

Solution:

Correct answer is (d) 4