Question

determinati x apartine N^* astfel incat 18 supra x sa fie numar natural​

Answer 1

x e egal cu divizorii lui 18
D18={1, 2, 3, 6, 9, 18}

Answer 2

$\it x\in\mathbb{N},\ \ \dfrac{18}{x}\in\mathbb{N} \Rightarrow x\in D_{18} \Rightarrow x\in\{1,\ \ 2,\ \ 3,\ \ 6,\ \ 9,\ \ 18\}$