Question

if N2-1 is divisible by 8 then 'N'is

Answer 1

Answer:

N^2 - 1  =8

N^2 = 8 + 1

N^2 = 9

N = ±√9

N = ±3

Step-by-step explanation:

Answer 2

Answer:

${n}^{2} - 1 = 8 \\ \\ {n}^{2} = 8 + 1 \\ \\ {n}^{2} = 9 \\ \\ n = \sqrt{9} \\ \\ n = \sqrt{3 \times 3} \\ \\ n = 3.$

here is your answer.

Step-by-step explanation:

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