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Solve the Problem ∣A∣| \mathrm { A } | By Expanding Across the Second Row

Question 54

Essay

Solve the problem.
-Evaluate ∣A∣| \mathrm { A } | by expanding across the second row. Show all your work.
A=[1−3−402−151−3]A = \left[ \begin{array} { r r r } 1 & - 3 & - 4 \\0 & 2 & - 1 \\5 & 1 & - 3\end{array} \right]

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