indicating *briefly* how the form of the curve has been derived.

Draw a sketch-graph of the curve whose equation is
\[\begin{equation*}
y = x^2(2-x).
\end{equation*}\]
Hence, or otherwise, draw a sketch-graph of the curve whose equation is
\[\begin{equation*}
y^2 = x^2(2-x)
\end{equation*}\]

indicating *briefly* how the form of the curve has been derived.