Question

Calculați xeN stiind ca (x+1)|(x+8) clasa a 6-a va rogg...

Answer 1

Răspuns:

Explicație pas cu pas:

Answer 2

$\it x\in\mathbb{N}^*\ \ \ \ \ (1)\\ \\ \left.\begin{aligned} \it x+1\bigg|x+8\\ \it x+1\bigg|x+1\end{aligned}\right\} \Rightarrow x+1\bigg|x+8-x-1 \Rightarrow x+1\bigg|7\ \ \ \ \ (2)\\ \\ \\ (1),\ (2) \Rightarrow x+1\in\{1,\ \ 7\}\Bigg|_{-1} \Rightarrow x\in\{0,\ \ 6\}$