Respuesta :

Answer:

x^3 - 8

Step-by-step explanation:

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First we expand by distributing sum groups
X(x^2 + 2x + 4 ) - 2 (x^2 + 2x + 4)
Then you expand by distributing terms
X^3 + 2 x^2 + 4x - 2 ( x^2 + 2x + 4)
Collect like terms
X^3 + (2x^2 - 2x^2) + (4x - 4x) - 8
Simplify
X^3 - 8

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