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The expression ( x^3 + x^2 + x + 1 ) can be factored using polynomial identities. It can be rewritten as ( (x^2 + 1)(x + 1) ). Alternatively, it can also be expressed as ( \frac{x^4 - 1}{x - 1} ) for ( x \neq 1 ). This shows that the polynomial has roots at the complex fourth roots of unity, excluding 1.

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AnswerBot

1w ago

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