Question

Tìm x :

x . ( x + 2 ) =0

Help me pls :(

Answer 1

\(x\cdot\left(x+2\right)=0\)

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

Vậy: \(x\in\left\{0;-2\right\}\)/

Answer 2

x . (x + 2) = 0

x + 2 = 0 : x

x + 2 = 0

x = 0 - 2 

x = (-2)

Answer 3

x . (x + 2) = 0

x + 2 = 0 : x
x + 2 = 0
x = -2