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Add or subtract the given polynomials.
Depression
A mental health disorder characterized by persistent feelings of sadness, loss, or anger that interfere with a person’s everyday activities.
Antidepressant Drugs
Drugs that act as mood elevators for people with severe depression and are also prescribed to treat some anxiety disorders.
Bipolar Disorder
A mood disorder in which manic episodes alternate with periods of depression, usually with relatively normal periods in between.
Lithium
A chemical element used in the treatment of bipolar disorder to stabilize mood swings.
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