Usaremos la formula de Diferencia de Cuadrados (Productos Notables):
(a+1) (a-1) = a²-1² = a²-1
C. a²-1
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Usaremos la formula de Diferencia de Cuadrados (Productos Notables):
(a+1) (a-1) = a²-1² = a²-1
C. a²-1