Matrices
Oswaal
CBSE
Grade 12
Question:
If $A = \begin{bmatrix} 2 & 3 \\ 1 & 2 \end{bmatrix}$, show that $A^2 - 4A + I = O$.
Step-by-Step Solution
Key Concept: A^2 = \begin{bmatrix} 7 & 12 \\ 4 & 7 \end{bmatrix}. A^2 - 4A + I = O.
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Correct Answer:
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