Write the Complex Conjugate of the Following Complex Number and Then

question 118

Multiple Choice

Write the complex conjugate of the following complex number and then multiply the number by the complex conjugate. Write the result in standard form.
$$1 + \sqrt { - 20 }$$

• A) \(1 - 20 i ; 19\)
• B) \(1 - 5 \sqrt { 2 } i ; 21\)
• C) \(- 1 - 2 \sqrt { 5 } i ; 21\)
• D) \(- 1 - 2 \sqrt { 5 } i ; 19\)
• E) \(1 - 2 \sqrt { 5 } i ; 21\)

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Few Competitors

A market condition where only a small number of firms operate, often leading to higher prices and reduced competition.

Oligopoly

Market structure in which relatively few sellers compete and high start-up costs form barriers to keep out new competitors.

Planned Economy

Economic system in which government controls determine business ownership, profits, and resource allocation to accomplish government goals rather than those set by individual firms.

Mixed Market Economy

features both private and public enterprise, blending elements of capitalist and socialist economic systems.