\(\left(x-2020\right)\left(x-2021\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-2020=0\\x-2021=0\end{cases}\Leftrightarrow\orbr{\begin{cases}x=0+2020=2020\\x=0+2021=2021\end{cases}}}\)
Vậy \(x=2020;2021\)
\(\left(x-2020\right)\left(x-2021\right)=0\)
\(\Leftrightarrow\hept{\begin{cases}x-2020=0\\x-2021=0\end{cases}}\Leftrightarrow\hept{\begin{cases}x=2020\\x=2021\end{cases}}\)
vậy x=2020 hoặc x=2021
Anh sửa lại bài một xíu nhé !
Ta có : \(\left(x-2020\right).\left(x-2021\right)=0\)
\(\Leftrightarrow\orbr{\begin{cases}x-2020=0\\x-2021=0\end{cases}\Leftrightarrow}\orbr{\begin{cases}x=2020\\x=2021\end{cases}}\)
Vậy \(x=2020\) hoặc \(x=2021\)
( x - 2020 ) ( x - 2021 ) = 0
\(\Rightarrow\)x - 2020 = 0 hoặc x - 2021 = 0
+) x - 2020 = 0 +) x - 2021 = 0
x = 2020 x = 2021
(x-2020) (x-2021)=0
x-2020=0 hoặc x-2021=0
x=0+2020 hoặc x=0+2021
x=2020 hoặc x=2021
vậy x=2020 hoặc x=2021
\(\left(x-2020\right)\left(x-2021\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-2020=0\\x-2021=0\end{cases}\Rightarrow\orbr{\begin{cases}x=2020\\x=2021\end{cases}}}\)
Vậy ..........
Bài làm
\(\left(x-2020\right)\left(x-2021\right)=0\Leftrightarrow\orbr{\begin{cases}x=2020\\x=2021\end{cases}}\)
