Add or subtract the given polynomials. 
Definitions:
Counterconditioning
A behavior therapy technique that involves replacing an unwanted or negative response to a stimulus with a positive one.
Psychological Disorders
Psychological disorders are patterns of behavioral or psychological symptoms that impact multiple areas of life and/or create distress for the individual suffering from them.
Psychotherapy
A form of therapy that involves talking with a mental health professional to address emotional issues and mental disorders.
Free Association
In psychoanalysis, a method of exploring the unconscious in which the person relaxes and says whatever comes to mind, no matter how trivial or embarrassing.
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