Question

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

Answer 1

Đề yêu cầu gì em?

Answer 2

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

\(\Leftrightarrow x=0\) hoặc \(2x-1=0\) hoặc \(x+3=0\)

*) \(2x-1=0\)

\(2x=1\)

\(x=\dfrac{1}{2}\)

*) \(x+3=0\)

\(x=-3\)

Vậy \(S=\left\{-3;0;\dfrac{1}{2}\right\}\)

Answer 3

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