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JEE Main 2026 Mathematics question

MathematicsMatricesJEE Main 2026

Let satisfy A²+α(adj(adj(A)))+β(adj(A))(adj(adj(A))) = for some α, β∈ℝ. Then (α−β)² is equal to .

Answer: 4

Solution

det A=−1. For a 3×3 matrix, adj(adj(A))=det(A)·A=−A, and

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Question ID VK-015655