\(\Rightarrow\orbr{\begin{cases}x-1=0\\x+5=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=1\\x=-5\end{cases}}\)
k cho mk cái
(x - 1)(x + 5) = 0
=> \(\orbr{\begin{cases}x-1=0\\x+5=0\end{cases}}\)
=> \(\orbr{\begin{cases}x=0+1\\x=0-5\end{cases}}\)
=> \(\orbr{\begin{cases}x=1\\x=-5\end{cases}}\)
( x - 1 ) . ( x + 5 ) = 0
( - x + 1 ) . ( x + 5 ) = 0
[ x + ( - 1 ) ] . ( x + 5 ) = 0
x . [ ( - 1 ) + 5 ] = 0
x . 4 = 0
x = 0 . 4
x = 0