Multiply, and Then Simplify If Possible $( \sqrt { 7 } - \sqrt { 3 } ) ^ { 2 }$

question 31

Multiple Choice

Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
- $( \sqrt { 7 } - \sqrt { 3 } ) ^ { 2 }$

• A) \(21 - 2 \sqrt { 21 }\)
• B) \(10 - 2 \sqrt { 21 }\)
• C) \(10 + 2 \sqrt { 21 }\)
• D) \(4 - 2 \sqrt { 21 }\)

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Definitions:

Job Cost Sheets

Documents that track the costs associated with a specific job or project.

Machine Hours

A measure of production output or activity based on the cumulative hours that machines are operational.

Factory Overhead

All indirect costs associated with the production process, such as utilities, maintenance, and management salaries.

Machine Hours

A measure of the actual time a machine is operated, used in calculating manufacturing costs and setting factory overhead rates.