Question

(1/3:x-2) mũ 2 +4/5 =36/25  gấp ạ

Answer 1

\(\Leftrightarrow\left(\dfrac{1}{3}:x-2\right)^2=\dfrac{16}{25}\)

\(\Leftrightarrow\left[{}\begin{matrix}\dfrac{1}{3}:x-2=\dfrac{4}{5}\\\dfrac{1}{3}:x-2=-\dfrac{4}{5}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}\dfrac{1}{3}:x=\dfrac{14}{5}\\\dfrac{1}{3}:x=\dfrac{6}{5}\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{5}{42}\\x=\dfrac{5}{18}\end{matrix}\right.\)