Answer:
(x + 2)(x² - 2x +4)
Explanation:
The sum of cubes factors as ...
(a³ +b³) = (a +b)(a² -ab +b²)
Here, you have a=x, b=2, so the factorization is ...
x³ +8 = (x +2)(x² -2x +4) . . . . . . matches the first selection
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