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

question 86

Multiple Choice

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

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

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Definitions:

Ethnocentrism

The belief in the inherent superiority of one's own ethnic group or culture, often accompanied by a generalized prejudice towards other cultures.

Australia

A country and continent surrounded by the Indian and Pacific oceans, known for its Sydney Opera House, Great Barrier Reef, and unique wildlife.

Greece

A southeastern European country known for its ancient civilization, influential in arts, sciences, and democracy, with a rich history and cultural heritage.

Heterosexism

A belief system or ideology that considers heterosexual orientation as the norm, often resulting in discrimination against non-heterosexual orientations.