Question

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Answer 1

Respuesta:

${x}^{3} - 2 {x}^{2} - x + 2 = {x}^{2} (x - 2) - (x - 2) \\ = (x - 2)( {x}^{2} - 1 ) \\ = (x - 2)(x - 1)(x + 1)$

Un factor primo es (x+1)