The value of the determinant \(\begin{vmatrix} 5 & 3 \\ -7 & -4 \end{vmatrix}\) is
A. \(-1\)
B. \(-41\)
C. \(41\)
D. \(1\)
A. \(-1\)
B. \(-41\)
C. \(41\)
D. \(1\)
Best answer
Answer: D. \(1\)
\(5\times(-4) - 3\times(-7) = -20 + 21 = 1\).
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