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AP® Calculus AB-BC

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Difficult

Limit with a Scary Root

APCALC-THZGKL

$\lim \limits_{x \to 5} \cfrac{x-5}{\sqrt{5}-\sqrt{x}}$ is:

A

$-2 \sqrt{5}$

B

$\sqrt{5}$

C

$10$

D

$2 \sqrt{5}$