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Mathematics
Hillary Yu
13 January, 04:36
N squared minus 1 equals 8
+4
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1
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Cassie Snyder
13 January, 06:26
0
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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