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

Multiple Choice

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

A) $- 4$
B) 0
C) 4
D) $- 5$