Question

2x . ( x - 1 phần 7) = 0

Answer 1

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

\(\Rightarrow\orbr{\begin{cases}2x=0\\x-\frac{1}{7}=0\end{cases}\Rightarrow\orbr{\begin{cases}x=0\\x=\frac{1}{7}\end{cases}}}\)

Vậy x=0 hoặc x= 1/7 

Answer 2

\(2x.\left(x-\frac{1}{7}\right)=0\)

\(x.\left(x-\frac{1}{7}\right)=0\)

\(x=0\)HOẶC   \(x-\frac{1}{7}=0\)

\(x=0\)HOẶC   \(x=\frac{1}{7}\)