Question

(x-2).(x+5)=0

Answer 1

Lời giải:
\((x-2)(x+5)=0\)

\(\Rightarrow \left[\begin{matrix} x-2=0\\ x+5=0\end{matrix}\right.\Rightarrow \left[\begin{matrix} x=2\\ x=-5\end{matrix}\right.\)

Vậy $x=2$ hoặc $x=-5$

Answer 2

Answer 3

(x-2).(x+5)=0

\(\Rightarrow\left[{}\begin{matrix}x-2=0\\x+5=0\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=2\\x=-5\end{matrix}\right.\)

\(Vậy\) \(x=2\) \(hoặc\) \(x=-5\)

Answer 4

\(\left(x-2\right)\left(x+5\right)=0\)

\(\Rightarrow\left[{}\begin{matrix}x-2=0\\x+5=0\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=0+2\\x=0-5\end{matrix}\right.\)

\(\Rightarrow\left[{}\begin{matrix}x=2\\x=-5\end{matrix}\right.\)

Vậy: x = 2 hoặc x = -5