\(3x\left(2x-1\right)-1-2x=0\)
\(\Leftrightarrow6x^2-3x-1-2x=0\)
\(\Leftrightarrow6x^2-5x-1=0\)
chắc bài này sai đề. sửa lại:
\(3x\left(2x-1\right)+1-2x=0\)
\(\Leftrightarrow3x\left(2x-1\right)-\left(2x-1\right)=0\)
\(\Leftrightarrow\left(3x-1\right)\left(2x-1\right)=0\)
\(\Rightarrow\orbr{\begin{cases}3x-1=0\\2x-1=0\end{cases}}\Rightarrow\orbr{\begin{cases}x=\frac{1}{3}\\x=\frac{1}{2}\end{cases}}\)