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Solve the equation by using the zero-product property.
Positive Externalities
Benefits experienced by third parties or society at large as a result of an economic activity, without the third party incurring any cost.
Public Goods
Goods that are non-excludable and non-rivalrous, meaning no one can be prevented from using them and one person's use does not reduce availability to others.
Consumer Surplus
The gap between what consumers are prepared and can afford to pay for a product or service, and what they end up paying in reality.
Producer Surplus
The difference between the amount producers are willing to accept for a good versus what they actually receive.
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