Question

\(\left(x-\dfrac{1}{17}\right).\left(x+5\right)=0\)

Answer 1

`(x-1/17).(x+5)=0`

\(\Rightarrow\left[{}\begin{matrix}x-\dfrac{1}{17}=0\\x+5=0\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=0+\dfrac{1}{17}\\x=0-5\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{1}{17}\\x=-5\end{matrix}\right.\)

vậy \(x\in\left\{\dfrac{1}{17};-5\right\}\)

Answer 2

\(\left(x-\dfrac{1}{17}\right).\left(x+5\right)=0\)

\(\Rightarrow\left[{}\begin{matrix}x-\dfrac{1}{17}=0\\x+5=0\end{matrix}\right.\)           \(\Rightarrow\left[{}\begin{matrix}x=\dfrac{1}{17}\\x=-5\end{matrix}\right.\)

Vậy \(x\in\left\{\dfrac{1}{17};-5\right\}\)

Answer 3

`<=> x -1/17 = 0` hoặc `x + 5 = 0`

`<=> x = 1/17` hoặc `x =-5`