Question

3./x -2/+6=3^2.2

Answer 1

trả lời nhanh giúp mình cần gấp

Answer 2

\(3.\left|x-2\right|+6=3^2.2\)

\(\Leftrightarrow3\left|x-2\right|+6=9.2\)

\(\Leftrightarrow3\left|x-2\right|+6=18\)

\(\Leftrightarrow3\left|x-2\right|=12\)

\(\Leftrightarrow\left|x-2\right|=4\)

\(\Leftrightarrow\orbr{\begin{cases}x-2=4\\x-2=-4\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=6\\x=-2\end{cases}}\)

Answer 3

\(3.|x-2|+6=3^2.2\)

\(\Rightarrow3.|x-2|+6=9.2\)

\(\Rightarrow3.|x-2|+6=18\)

\(\Rightarrow3.|x-2|=12\)

\(\Rightarrow|x-2|=4\)

\(\Rightarrow\orbr{\begin{cases}x-2=4\\x-2=-4\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=6\\x=-2\end{cases}}\)