∣ −1 2 4 0 3 1 0 0 −4∣=\begin{vmatrix}\ \ \ \ -1 \ \ \ \ \ 2 \ \ \ \ \ \ 4\\ \ \ \ \ \ \ \ 0 \ \ \ \ \ \ 3 \ \ \ \ \ \ \ 1 \\\ \ \ \ \ \ \ \ 0 \ \ \ \ \ 0 \ \ \ \ -4 \end{vmatrix} = ∣∣ −1 2 4 0 3 1 0 0 −4∣∣= A12B-12C24D6Answer: A. 12 Read Explanation: ∣ −1 2 4 0 3 1 0 0 −4∣\begin{vmatrix}\ \ \ \ -1 \ \ \ \ \ 2 \ \ \ \ \ \ 4\\ \ \ \ \ \ \ \ 0 \ \ \ \ \ \ 3 \ \ \ \ \ \ \ 1 \\\ \ \ \ \ \ \ \ 0 \ \ \ \ \ 0 \ \ \ \ -4 \end{vmatrix} ∣∣ −1 2 4 0 3 1 0 0 −4∣∣=−1(−12)=12= -1(-12) = 12=−1(−12)=12 Read more in App
