Question

Gỉai PT : |X-2|=5

Answer 1

TH1: \(x-2=5\) \(\Rightarrow x=7\)

TH2: \(-x+2=5\) \(\Rightarrow x=-3\)

 

 

Answer 2

`|x-2|=5`

`<=>` $\\left[ \begin{array}{l}x-2=5\\x-3=-5\end{array} \right.$

`<=>` $\\left[ \begin{array}{l}x=7\\x=-2\end{array} \right.$

Vậy `s={7,-2}`

Answer 3

|x-2|=5

=>x-2=5  hoặc  x-2=-5

+)x-2=5 =>x=7

+)x-2=-5 =>x=-3

Vậy x thuộc {7;-3}

Answer 4

|x-2|=5

TH1: x-2≥0 ⇔ x≥2      TH2: x-2<0 ⇔ x<2

  x-2=5                             x-2=-5

⇔ x=7(tm)                     ⇔ x=-3(tm)

⇒S={7;-3}