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$413-051)$

ections $4\mathrm{.}74\mathrm{.}9$

Question $1,4\mathrm{.}7\mathrm{.}71$

Evaluate the following limit$.$ Use rHOpitar's Rule when it is convenient and applicable.

$\underset{x7}{lim}\frac{\sqrt[5]{2x+18}-2}{\frac{1}{x}-\frac{1}{7}}$

$\underset{x7}{lim}\frac{\sqrt[5]{2x+18}-2}{\frac{1}{x}-\frac{1}{7}}-\frac{49}{40}($Type an exact answer.$)$