Solve the Equation by Completing the Square $$x ^ { 2 } + 3 x - 9 = 0$$

question 269

Multiple Choice

Solve the equation by completing the square.
- $$x ^ { 2 } + 3 x - 9 = 0$$

• A) \(\left\{ \frac { - 3 \pm 3 \sqrt { 5 } } { 2 } \right\}\)
• B) \(\{ - 3 \pm 3 \sqrt { 5 } \}\)
• C) \(\left\{ \frac { - 3 - 3 \sqrt { 5 } } { 2 } \right\}\)
• D) \(\left\{ \frac { - 3 + 3 \sqrt { 5 } } { 2 } \right\}\)

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Definitions:

Gyri

The ridges or convolutions found on the surface of the brain.

Cranial Nerves

Peripheral nerves that originate from the brain.

Peripheral Nerves

Nerves located outside the brain and spinal cord that connect the central nervous system to limbs and organs, transmitting signals to and from the body.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, the fundamental unit of the nervous system with the ability to communicate information through electrical and chemical signals.