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Evaluate: \(\begin{vmatrix} x + λ& x & x \\[0.3em] x &x +λ & x \\[0.3em] x & x &x + λ\end{vmatrix}\)

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Evaluate: \(\begin{vmatrix} x + λ& x & x \\[0.3em] x &x +λ & x \\[0.3em] x & x &x + λ\end{vmatrix}\)

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1 Answer

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Best answer

Suppose

On applying C1 → C1 + C2 + C3

Take (3x - λ) common

On applying R2 → R2 - R1, and R3 → R3 - R1

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