Factor the expression as the sum or difference of two cubes. 
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Personal Income Tax
Tax levied on individuals or households based on their income level.
Raising Children
The process and practices involved in promoting and supporting the physical, emotional, social, and intellectual development of a child from infancy to adulthood.
Opportunity Cost
The economic consequence of bypassing the nearest favorable option when making a choice.
Attractive Offer
A proposal or deal that is appealing and likely to be accepted by others.
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