Determinants and Cramer's Rule
1 Evaluate a Second-Order Determinant
- $\left| \begin{array} { r r } 1 & - 2 \\ 2 & 3 \end{array} \right|$

Multiple Choice

Determinants and Cramer's Rule
1 Evaluate a Second-Order Determinant
- $\left| \begin{array} { r r } 1 & - 2 \\ 2 & 3 \end{array} \right|$

A) $7$
B) $- 1$
C) $- 7$
D) $- 8$