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in Matrices and Determinants by (47.4k points)
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If \( \begin{vmatrix} x&2\\8&5 \end{vmatrix}\) = 0 then the value of x is: 

(a) \(\frac{-5}{6}\)

(b) \(\frac{5}{6}\)

(c) \(\frac{-16}{5}\)

(d) \(\frac{16}{5}\)

1 Answer

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by (47.8k points)
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Best answer

(d) \(\frac{16}{5}\)

\( \begin{vmatrix} x&2\\8&5 \end{vmatrix}\) = 0 

5x – 16 = 0 

⇒ x = \(\frac{16}{5}\)

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