Question

2 phần x +1 = x + 1 phần 50 tìm x cứu ko hiểu

 

Answer 1

\(\dfrac{2}{x+1}=\dfrac{x+1}{50}\)

`=> (x+1)^2 = 2.50`

`=> (x+1)^2 = 100`

`=> (x+1)^2 =+ -10`

\(\Rightarrow\left[{}\begin{matrix}x+1=10\\x+1=-10\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=9\\x=-11\end{matrix}\right.\)