Question

Answer 1

\(2x\left(x-3\right)=x-3\)

\(\Leftrightarrow2x\left(x-3\right)-\left(x-3\right)=0\)

\(\Leftrightarrow\left(2x-1\right)\left(x-3\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}2x-1=0\\x-3=0\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{1}{2}\\x=3\end{matrix}\right.\)

Answer 2

=>2x(x-3)-(x-3)=0

=>(x-3)(2x-1)=0

=>x=3 hoặc x=1/2