Bentuk Pemfaktoran 2

\begin{equation*}
\begin{split}
& \lim_{x \rightarrow 4} \: \frac {x^2 - 4x}{x - 4} \\\\
& \lim_{x \rightarrow 4} \: \frac {x(x - 4)}{x - 4} \\\\
& \lim_{x \rightarrow 4} \: \frac {x \cancel{(x - 4)}}{\cancel {x - 4}} \\\\
&  \lim_{x \rightarrow 4} \: x \\\\
& 4
\end{split}
\end{equation*}