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Question Number 166448 by SANOGO last updated on 20/Feb/22

montrer q  ∀nεN  n^2 +n est divisible par 30

$${montrer}\:{q}\:\:\forall{n}\epsilon{N} \\ $$$${n}^{\mathrm{2}} +{n}\:{est}\:{divisible}\:{par}\:\mathrm{30} \\ $$

Commented by MJS_new last updated on 20/Feb/22

it′s not true

$$\mathrm{it}'\mathrm{s}\:\mathrm{not}\:\mathrm{true} \\ $$

Commented by malwan last updated on 20/Feb/22

n^3 −n est divisible par 3

$${n}^{\mathrm{3}} −{n}\:{est}\:{divisible}\:{par}\:\mathrm{3} \\ $$

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