Write the Word or Phrase That Best Completes Each Statement $A = \left[ \begin{array} { l } - 2 \\ 1 \\ - 1 \end{array} \right]$

question 29

Essay

Write the word or phrase that best completes each statement or answers the question.
-Let $A = \left[ \begin{array} { l } - 2 \\ 1 \\ - 1 \end{array} \right]$ and $B = \left[ \begin{array} { l l l } 1 & - 1 & 0 \end{array} \right]$
Find $\mathrm { AB }$ .

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Definitions:

Social Classes

Categories of individuals within a society, distinct by their socio-economic status, wealth, education, and occupation, impacting their power and privileges.

Amusement

Activities, events, or experiences designed to entertain and provide enjoyment or laughter to participants or observers.

Labor-Saving Devices

Labor-saving devices are tools, machines, or equipment designed to reduce the amount of manual labor and time required to complete various tasks or chores.