Question

Tìm n thuộc N để n+8 chia hết cho n

Answer 1

\(\text{Ta có: }(n+8)\ \vdots\ n\)

\(\text{Ta có: }n\ \vdots\ n \Rightarrow 8\ \vdots\ n\)

\(\Rightarrow n\in Ư(8)\)

\(Ư(8)=\{\pm1;\pm2;\pm4;\pm8\}\)

\(n\in\{\pm1;\pm2;\pm4;\pm8\}\)

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