Find the value of the determinant.
-$$\left| \begin{array} { l l }
2 & 9 \
5 & 6
\end{array} \right|$$
A) 57
B) $- 33$
C) 33
D) $- 12$

Name: Find the value of the determinant. -\[\left| \begin{array} { l l } 2 & 9 \\ 5 & 6 \end{array} \right|\] A) 57 B) $- 33$ C) 33 D) $- 12$
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Question

Find the value of the determinant.
-$$\left| \begin{array} { l l } 
2 & 9 \
5 & 6
\end{array} \right|$$
A) 57
B) $- 33$
C) 33
D) $- 12$

Quizplus · Accepted Answer

The determinant of a 2x2 matrix $\left| \begin{array} { l l } a & b \ c & d \end{array} \right|$ is calculated as $ad - bc$. For this matrix, it is $2 \times 6 - 9 \times 5 = 12 - 45 = -33$.

Find the Value of the Determinant ∣2956∣\left| \begin{array} { l l } 2 & 9 \\5 & 6\end{array} \right|​25​96​​

Find the Value of the Determinant $\left| \begin{array} { l l } 2 & 9 \\5 & 6\end{array} \right|$