Find the Determinant of the Matrix by the Method of Expansion

question 2

Multiple Choice

Find the determinant of the matrix by the method of expansion by cofactors.Expand using the row 1.​ $$\left[ \begin{array} { c c c } - 3 & 2 & 1 \\4 & 5 & 6 \\2 & - 3 & 1\end{array} \right]$$ ​

• A)-73
• B)75
• C)-75
• D)-74
• E)-76

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Definitions:

Personal Utility

Refers to the value or benefit that an individual personally gains from using a product, service, or tool.

Validation

The process of confirming that something is based on truth or fact, or meets a particular standard.

Immediacy

The perception of closeness, involvement, and warmth between communicators, often enhanced by nonverbal cues.

Social Identity Suicide

Social Identity Suicide is the phenomenon where an individual deliberately abandons or discards their established social identity, often to escape negative associations or for personal reinvention.