Find the Value of the Determinant $$\left| \begin{array} { r r } 3 & - 1 \\- 1 & 2\end{array} \right|$$

question 21

Multiple Choice

Find the value of the determinant.
- $$\left| \begin{array} { r r } 3 & - 1 \\- 1 & 2\end{array} \right|$$

• A) -1
• B) 5
• C) -5
• D) 7

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Definitions:

Commercial Allies

Countries or organizations that engage in mutual cooperation to enhance economic growth, trade relations, and business development.

Foreign Allies

Countries that form partnerships or alliances with one another, often for mutual benefit such as defense, security, or economic cooperation.

Union Officers

Military leaders or officials in the Union army during the American Civil War.

Confederacy

A league or alliance, especially of states or groups. Historically, it also refers to the Confederate States of America, a collection of 11 southern states that seceded from the United States in 1860-1861.