Question

Tìm x biết x^2-3x=0  help!!!!!

Answer 1

\(x^2-3x=0\)
\(\Rightarrow x\left(x-3\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x-3=0\end{matrix}\right.\)            \(\Rightarrow\left[{}\begin{matrix}x=0\\x=3\end{matrix}\right.\)
                 Vậy \(x\in\left\{0;3\right\}\)

Answer 2

=>x(x-3)=0

=>x=0 hoặc x=3

Answer 3

x² - 3x = 0

x(x - 3) = 0

x = 0 hoặc x - 3 = 0

*) x - 3 = 0

x = 0 + 3

x = 3

Vậy x = 0; x = 3