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  4. If A is a matrix of order 3 × 3, then (A2)-1 is equal to

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Q. If $A$ is a matrix of order $3 \times 3$, then $\left(A^{2}\right)^{-1}$ is equal to

KCETKCET 2022Matrices

Solution:

$\left( A ^{2}\right)^{-1}=\left( A ^{-1}\right)^{2}$