Question

\(\sqrt{x-2}=\dfrac{2}{3}\)

Answer 1

\(\sqrt{x-2}\) = \(\dfrac{2}{3}\) (đk \(x-2\) ≥ 0; \(x\ge\) 2)

  \(x-2\) =(\(\dfrac{2}{3}\))²

 \(x-2\) = \(\dfrac{4}{9}\)

 \(x=\dfrac{4}{9}\) + 2

 \(x=\dfrac{22}{9}\)

Vậy \(x=\dfrac{22}{9}\)

 

  

Answer 2

ĐKXĐ: \(x\ge2\)

\(\sqrt{x-2}=\dfrac{2}{3}\)

\(x-2=\dfrac{4}{9}\)

\(x=\dfrac{4}{9}+2\)

\(x=\dfrac{22}{9}\) (nhận)

Vậy \(x=\dfrac{22}{9}\)