Question

If N=(n-1) (n+1) is divided by 8 then N is certainly be??

Answer 1

Answer:

odd number

Step-by-step explanation:

(n-1)(n+1)= n^2 - 1

if we substitute n = 1, 3,5,7,9.....

we can observe that it is divisible by 8

so n= odd numbers