Question

me ajudem ..por favor ..! $\lim_{x \to \ 49} \frac {7- \sqrt{x} }{x- \sqrt{49} }$

Answer 1

$\lim_{x \to49} \frac{7- \sqrt{x} }{x- \sqrt{49} } \\ \\ \lim_{x \to49} \frac{7- \sqrt{x} }{x- 7 } \\ \\ \lim_{x \to49} \frac{7- \sqrt{49} }{49- 7 } \\ \\ \lim_{x \to49} \frac{7-7 }{49- 7 } =0$