Question

x . ( x + 1 ) = 0

Answer 1

Ta có:

\(x\left(x+1\right)=0\)

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

Vậy \(\left[{}\begin{matrix}x=0\\x=-1\end{matrix}\right.\).

Answer 2

x . (x + 1) = 0

\(\Rightarrow\) x = 0 hoặc x + 1 = 0

Nếu x + 1 = 0

x = 0 - 1

x = -1

Vậy x = 0 hoặc x = -1