Question

[Hhhh]

X+5⋮X+1

Answer 1

[Võ Ngọc Phương]

\(x+5⋮x+1\)

Ta có: \(\left(x+1\right)+4⋮x+1\)

\(\Rightarrow4⋮x+1\)

khi \(x+1\inƯ\left(4\right)=\left\{\pm1;\pm2;\pm4\right\}\)

Ta có bảng sau:

x+1	-1	1	-2	2	-4	4
x	-2	0	-3	1	-5	3

Vậy x +4 \(⋮\) x+1 khi x ϵ \(\left\{-2;0;-3;1;-5;3\right\}\)

Answer 2

[Nguyễn Thị Thương Hoài]

ngu