Question

Tìm x

/x+2/=1/8

(5)^x+3=5⁵: 125⁵

 

Answer 1

\(\hept{\begin{cases}x+2=\frac{1}{8}\\x+2=\frac{-1}{8}\end{cases}\Rightarrow\hept{\begin{cases}x=\frac{-15}{8}\\x=\frac{-17}{8}\end{cases}}}\)

Answer 2

> x+2=1/8 hoac x+2=-1/8

=>x=-15/8 hoac x =-17/8

Answer 3

Vì /x+2/=\(\frac{1}{8}\Rightarrow\orbr{\begin{cases}x+2=\frac{1}{8}\\x+2=\frac{-1}{8}\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=\frac{1}{8}-2\\x=\frac{-1}{8}-2\end{cases}}\Rightarrow\orbr{\begin{cases}x=\frac{-15}{8}\\x=\frac{-17}{8}\end{cases}}\)

\(\Rightarrow x=\left\{\frac{-15}{8};\frac{-17}{8}\right\}\)

Answer 4

/x+2/=1/8

x+2=1/8 hoặc x+2=-1/8

x=1/8-2          x=-1/8-2

x=-15/8          x=-17/8

 Vậy x=-15/8 hoặc x=-17/8 

Answer 5

|x + 2| = \(\frac{1}{8}\) 

\(\Rightarrow\)\(x+2=\frac{1}{8}\)                    hoặc                \(x+2=\frac{-1}{8}\)

\(x=\frac{1}{8}-2\)                                                      \(x=\frac{-1}{8}-2\)

\(x=\frac{1}{8}-\frac{16}{8}\)                                                   \(x=\frac{-1}{8}-\frac{16}{8}\)

\(x=\frac{-15}{8}\)                                                           \(x=\frac{-17}{8}\)

\(\Rightarrow x\in\left\{\frac{-15}{8};\frac{-17}{8}\right\}\)

Answer 6

saranghae,thanks