Question 15 Watch

Vicky Tran
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Just done the first paper of AS Math 30 minutes ago.
Can anyone explain to me how to do the question 15?
Prove that n^3+2 is not divisible by 8
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Glaz
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(Original post by Vicky Tran)
Just done the first paper of AS Math 30 minutes ago.
Can anyone explain to me how to do the question 15?
Prove that n^3+2 is not divisible by 8
If you manage to find one example where it isn't the case, then that's proved.
I.E:

2^{3} + 2 = 10
10 is not divisible by 8
Q.E.D

RDKGames tagging you in case my solution isn't valid.
Last edited by Glaz; 1 week ago
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Vicky Tran
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Thanks a lot.
(Original post by Glaz)
If you manage to find one example where it isn't the case, then that's proved.
I.E:

2^{3} + 2 = 10
10 is not divisible by 8
Q.E.D
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RDKGames
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(Original post by Glaz)
If you manage to find one example where it isn't the case, then that's proved.
I.E:

2^{3} + 2 = 10
10 is not divisible by 8
Q.E.D

RDKGames tagging you in case my solution isn't valid.
Looks good.
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