Question

b) 2x (x – 5) = 0       

Answer 1

\(2x\left(x-5\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}2x=0\\x-5=0\end{matrix}\right.\)

\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=5\end{matrix}\right.\)

Answer 2

\(2x\left(x-5\right)=0\)

⇒ \(\left[{}\begin{matrix}x=0\\x=5\end{matrix}\right.\)