Factor Using the Ac-Method $18 - 9 x + x ^ { 2 }$

question 1

Multiple Choice

Factor using the ac-method.
- $18 - 9 x + x ^ { 2 }$

• A) \(( x - 6 ) ( x - 3 )\)
• B) \(( x + 6 ) ( x - 3 )\)
• C) \(( x + 6 ) ( x + 3 )\)
• D) \(( x - 6 ) ( x + 3 )\)

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Definitions:

Keratitis

Inflammation of the cornea, the clear front layer of the eye, which can cause pain, reduced vision, and light sensitivity.

Retrolental Fibroplasia

A condition characterized by the abnormal development of fibrous tissue behind the lens of the eye, potentially leading to blindness; common in premature infants who have been exposed to high levels of oxygen.

Retinal Blood Vessels

The network of arteries and veins within the retina that supply blood, nutrients, and oxygen to support its functions.

Scleritis

An inflammatory disease affecting the sclera, the white outer layer of the eye, which can cause severe pain and potentially impair vision.