Let A = bmatrix 1 & 2 -2 & -5 bmatrix . Let , R be such that A^ 2 + A = 2I. Then + is equal to

JEE Main 2022 Mathematics question

Let A = . Let , R be such that . Then is equal to

Answer: (4)

= . So = $ -3α + β & -8α + 2β 8α - 2β & 21α - 5β

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Question ID VK-034419