If A is a 2×2 matrix such that A2021+A2020=I, where |A+I| is non-sing – InterviewSolution

1.	If A is a 2×2 matrix such that A2021+A2020=I, where \|A+I\| is non-singular, then (A2020)−1is equal to
Answer» If $A$ is a $2 \times 2$ matrix such that $A^{2021} + A^{2020} = I,$ where $\| A + I \|$ is non-singular, then ${(A^{2020})}^{- 1}$ is equal to

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