Question

Mn ơi, giúp em với. Em cảm ơn ạ!

a) 10 – 2n ⋮ n – 2 

Answer 1

\(\left(10-2n\right)⋮\left(n-2\right)\)

\(\Rightarrow-2\left(n-2\right)+6⋮\left(n-2\right)\)

\(\Rightarrow\left(n-2\right)\inƯ\left(6\right)=\left\{1;-1;2;-2;3;-3;6;-6\right\}\)

\(\Rightarrow n\in\left\{3;1;4;0;5;1;8;-4\right\}\)