formula : (a + b) (a - b) = a² - b²
ejercicio : (x + 1) (x - 1) =
ejercicio : (x + 1) (x - 1) =
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Respuesta:
(x + 1) (x - 1) = x² - 1
Explicación paso a paso:
Binomios conjugados:
(a + b)(a - b) = a² - b²
(x + 1) (x - 1) = x² - 1