Question

Tìm x thuộc Z biết

2\(\le\)|x| \(\le\)5

Answer 1

\(2\le\left|x\right|\le5\)

\(\Rightarrow\left|x\right|\in\left\{2;3;4;5\right\}\)

\(\Rightarrow x\in\left\{\pm2;\pm3;\pm4;\pm5\right\}\)

Answer 2

Vì \(2\le|x|\le5\)mà x \(\in\)Z

\(\Rightarrow|x|\in\left\{2;3;4;5\right\}\)

\(\Rightarrow x\in\left\{\mp2;\mp3;\mp4;\mp5\right\}\)

Vậy \(x\in\left\{\mp2;\mp3;\mp4;\mp5\right\}\)

# HOK TỐT #

Answer 3

\(2\le\left|x\right|\le5\)

\(\Rightarrow\left|x\right|\in\left\{2;3;4;5\right\}\)

\(\Rightarrow x\in\left\{\pm2;\pm3;\pm4;\pm5\right\}\)

Answer 4

x\(\hept{\begin{cases}\\\end{cases}\pm2;\pm3;\pm4;\pm5}\)

Answer 5

Trả lời :

\(2\le\left|x\right|\le5\)

\(\left|x\right|=\left\{2;3;4;5\right\}\)

 \(x=\pm2;\pm3;\pm4;\pm5\)

   - Study well -

Answer 6

2  ≤  |x|  ≤  5 

⇒ |x| ∈ {2;3;4;5} 

⇒x ∈ {±2; ± 3; ± 4; ± 5}

Answer 7

Trả lời:

Vì\(2\le\left|x\right|\le5\)

Mà\(x\inℤ\Rightarrow\left|x\right|\inℤ\)

\(\Rightarrow\left|x\right|\in\left\{2;3;4;5\right\}\)

\(\Leftrightarrow x\in\left\{-5;-4;-3;-2;2;3;4;5\right\}\)

Vậy\(x\in\left\{-5;-4;-3;-2;2;3;4;5\right\}\)

Hok tốt!

Good girl