Solve by Completing the Square $$z ^ { 2 } + 4 z - 9 = 0$$

question 57

Multiple Choice

Solve by completing the square.
- $$z ^ { 2 } + 4 z - 9 = 0$$

• A) \(- 2 \pm \sqrt { 13 }\)
• B) \(- 1 \pm \sqrt { 13 }\)
• C) \(- 2 \pm 2 \sqrt { 13 }\)
• D) \(2 + \sqrt { 13 }\)

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Definitions:

Small-company Stocks

Equity investments in companies with smaller market capitalization, often characterized by higher volatility and potential for growth.

Efficient Market

A financial market theory suggesting that asset prices fully reflect all available information at any given time, ensuring that securities are appropriately priced and investors cannot consistently achieve higher-than-average returns.

NPV

Net Present Value, a calculation to determine the present value of future cash flows minus initial investment, used to assess the profitability of a project.

Market Efficiency

An economic theory that posits that it is impossible to "beat the market" because stock market efficiency causes existing share prices to always incorporate and reflect all relevant information.