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1. $x^{4} + x^{2} + 1$

A. $(x^{2} + x + 1) (x^{2} + x - 1)$
B. $(x^{2} + x + 1) (x^{2} + x - 1)$
C. $(x^{2} + x + 1) (x^{2} + x - 1)$
D. $(x^{2} + x + 1) (x^{2} + x - 1)$

Answer: Option C

Explanation:

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