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10-02-2020
Mathematics

contestada

n squared minus 1 equals 8

Respuesta :

lazirlufias lazirlufias

10-02-2020

Answer:

n = –3 or n = 3

Step-by-step explanation:

n² – 1 = 8

n² – 9 = 0

(n + 3)(n –3) = 0

n + 3 = 0 or n – 3 = 0

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