Question

(n3 − n) is divisible by 3. Explain the reason.

Answer 1

Answer:

because the n is canceled out by the other n , which may be zero , but it is a variable so , it will have no value , then three will only be left so lhs = rhs so 3n-n = 3

Step-by-step explanation:

(3n - n) = 3

= [3(n-n] = 3

= 3 = 3

LhS = RHS

there fore 3n-n = 3

Answer 2

Because it has a factor of 3

So it is divisible

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