Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. (Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula.) 
Definitions:
Presbycusis
Age-related hearing loss, a gradual loss of hearing that occurs as people get older.
Ménière's Disease
A disorder of the inner ear causing vertigo, hearing loss, and tinnitus.
Tinnitus
A condition characterized by hearing noises in the ears (such as ringing, buzzing, or hissing) when there is no external sound source.
Methicillin-Resistant Staphylococcus Aureus
A type of bacterium that is resistant to several antibiotics, originally methicillin, causing infections in different parts of the body.
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