Question

2x.(x-1/7)=0

Answer 1

Căng nha

 

Answer 2

\(2x.\left(x-\dfrac{1}{7}\right)=0\\ \Leftrightarrow\left[{}\begin{matrix}2x=0\\x-\dfrac{1}{7}=0\end{matrix}\right.\\ \Leftrightarrow\left[{}\begin{matrix}x=0\\x=\dfrac{1}{7}\end{matrix}\right.\)

Vậy x=0,x= 1/7

Answer 3

\(2x\cdot\left(x-\dfrac{1}{7}\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=\dfrac{1}{7}\end{matrix}\right.\)