Question

[Quân Phạm Minh]

giúp mk; mk cho 3 like luôn

2^|x|-1=2-(-30)

3 like nhớ nhé!!!

http://olm.vn/hoi-dap/question/791513.html

Answer 1

[ngonhuminh]

\(2^{!x!-1}=2-\left(-30\right)=2+30=32=2^5\)

\(\Leftrightarrow!x!-1=5\Rightarrow!x!=6\Rightarrow\orbr{\begin{cases}x=6\\x=-6\end{cases}}\)