Add or subtract the given polynomials. 
Definitions:
Cessation
Cessation refers to the process of stopping or ending something, such as a habit or activity.
Narcolepsy
A chronic sleep disorder characterized by overwhelming daytime drowsiness and sudden attacks of sleep, often resulting in significant disruption to daily life.
Somniloquy
The act of talking during sleep, commonly referred to as sleep-talking.
Narcolepsy
A persistent condition marked by excessive sleepiness during the day and abrupt sleep episodes.
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