Question

2) x(2x - 4/11) = 0 

Answer 1

`x(2x-(4)/(11))=0`

`=>x=0` hoặc `2x-(4)/(11)=0`

`=>x=0` hoặc `2x=4/11`

`=>x=0` hoặc `x=2/11`

Vậy `x\in {0;2/11}`

Answer 2

`->` \(\left[{}\begin{matrix}x=0\\2x-\dfrac{4}{11}=0\end{matrix}\right.\)

`->` \(\left[{}\begin{matrix}x=0\\x=\dfrac{2}{11}\end{matrix}\right.\)