Solve the Equation by Factoring $$x ^ { 2 } + 7 x - 18 = 0$$

question 215

Multiple Choice

Solve the equation by factoring.
- $$x ^ { 2 } + 7 x - 18 = 0$$

• A) \(\{ - 9,2 \}\)
• B) \(\{ 9,2 \}\)
• C) \(\{ - 9,1 \}\)
• D) \(\{ 9 , - 2 \}\)

---

Definitions:

Mean-Variance Theory

A financial model that analyzes investments by examining their expected returns (mean) against their risk (variance) to select the most efficient portfolio.

Risk-Aversion Coefficients

Numerical measures quantifying an investor's tolerance for risk, impacting their investment choices and portfolio management.

Treynor-Black Model

A portfolio optimization model that blends a passively managed market index and active stock selections to maximize performance.

Nonsystematic Standard Deviation

A measure of the variability of an investment's return due to factors specific to the investment or its issuer, excluding broader market influences.