Factor the Polynomial $$z ^ { 2 } + 6 z + 9$$

question 22

Multiple Choice

Factor the polynomial. $$z ^ { 2 } + 6 z + 9$$

• A) \(( z - 3 ) ^ { 2 }\)
• B) \(( z + 3 ) ^ { 2 }\)
• C) \(( z + 3 ) ( z - 3 )\)
• D) \(( z + 3 ) ( z + 3 )\)
• E)none of these

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Definitions:

Vasodilation

is the widening of blood vessels, resulting from relaxation of smooth muscle cells within the vessel walls, often increasing blood flow.

Parasympathetic Stimulation

The stimulation of the parasympathetic nervous system results in outcomes such as a lower heart rate and heightened activity in the digestive system.

Peripheral Chemoreceptors

Sensory receptors located in the carotid and aortic bodies that detect changes in blood oxygen, carbon dioxide, and pH levels.

Carotid Bodies

Small, sensorial organs located on each side of the neck that detect changes in the oxygen and carbon dioxide levels in the blood.