MA0001/Exercise 6/tasks/2.tex

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\begin{align*}
\lim_{x \to 7} \left[ \frac{(x-7)^2 + 5(x-7)}{(x-7)(x-4)} \right] \\
\lim_{x \to 7} \left[ \frac{x-7 + 5}{x-4} \right] &= \frac{7-7+5}{7-4} \\
&= \frac{5}{3}\\
\end{align*}