Question

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

Answer 1

2x(x - 1/7) = 0

<=> 2x = 0 hoạc x - 1/7 = 0

<=> x = 0 hoặc x = 1/7

Vaayj phuong trình có nghiệm x = 0 hoặc x = 1/7

Answer 2

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

\(\Rightarrow\left\{{}\begin{matrix}2x=0\\x-\dfrac{1}{7}=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0:2=0\\x=0+\dfrac{1}{7}=\dfrac{1}{7}\end{matrix}\right.\)

Vậy x = 0 hoặc x = \(\dfrac{1}{7}\)

Answer 3