Find the value of following determinant 5 2 7 4

5 amp;2 7 amp;4=5×4 7×2=20 14=6 ...

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Solving Simultaneous Linear Equation Using Cramer's Rule

Find the valu...

Question

Find the value of following determinant
$∣ ∣ ∣ \begin{matrix} 5 & 2 7 & 4 \end{matrix} ∣ ∣ ∣$

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Solution

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∣ ∣ ∣ \begin{matrix} 7 & 2 5 & 4 \end{matrix} ∣ ∣ ∣

∣ ∣ ∣ \begin{matrix} - 3 & 8 6 & 0 \end{matrix} ∣ ∣ ∣

∣ ∣ ∣ \begin{matrix} - 1 & 7 2 & 4 \end{matrix} ∣ ∣ ∣

∣ ∣ ∣ \begin{matrix} 4 & 3 2 & 7 \end{matrix} ∣ ∣ ∣

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