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Factor the expression completely, if possible. Rewrite the expression in standard form and factor out "-1" if needed. If you believe the trinomial will not factor, answer "prime."
-21x2 + 6x + 15x3
Bodily Changes
Physical alterations or developments in the body that occur due to growth, aging, or health conditions.
Carroll Izard
A psychologist known for his contributions to the understanding of emotions and their development in humans, particularly in children.
Basic Emotion
Fundamental emotions that are universal across human cultures, such as happiness, sadness, fear, disgust, surprise, and anger.
Facial Feedback Effect
The theory suggesting that facial expressions can influence emotional experiences.
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