Question

[Bảo Ngọc]

( X - 890) x (74 - X) = 0

Answer 1

[Nguyễn Huy Tú]

\(\left(x-890\right)\left(74-x\right)=0\Leftrightarrow\left[{}\begin{matrix}x-890=0\\74-x=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=890\\x=74\end{matrix}\right.\)

Answer 2

[quanguanrise]

$\left(x-890\right)\left(74-x\right)=0$

$\Rightarrow \text{orbr}\{\begin{array}{l}x-890=0\\ 74-x=0\end{array}\Rightarrow \text{orbr}\{\begin{array}{l}x=0+890\\ x=74-0\end{array}\Rightarrow \text{orbr}\{\begin{array}{l}x=890\\ x=74\end{array}$