\(x+5⋮x+2\)
\(x+2+3⋮x+2\)
\(3⋮x+2\)hay \(x+2\inƯ\left(3\right)=\left\{\pm1;\pm3\right\}\)
x + 2 | 1 | -1 | 3 | -3 |
x | -1 | -3 | 1 | -5 |
\(2x+7⋮2x+1\)
\(2x+1+6⋮2x+1\)
\(6⋮2x+1\)hay \(2x+1\inƯ\left(6\right)=\left\{\pm1;\pm2;\pm3;\pm6\right\}\)
Tự lập bảng
\(3x+8⋮x+2\)
\(3\left(x+2\right)+2⋮x+2\)
\(2⋮x+2\)hay \(x+2\inƯ\left(2\right)=\left\{\pm1\right\}\)
Tự lập bảng