Factor to complete step $1$ of finding the limit$.$ Use the math editor to enter your answer.

$\underset{x1}{lim}\frac{x^2-8x+7}{x-1}$

$\underset{x1}{lim}\frac{n}{x-1}$;$n=,(x-1)\frac{x-7}{x-7}(x-1)$

$x^2-8x+7=(x-7)(x-1)$

Factor to complete step $1$ of finding the limit$.$ Use the math editor to enter your answer.

$\underset{x1}{lim}\frac{x^2-7x+6}{x-1}$

$\underset{x1}{lim}\frac{n}{x-1}$;$n=$

$$

Factor to complete step $1$ of finding the limit$.$ Use the math editor to enter your answer.

$\underset{x8}{lim}\frac{x^2-17x+72}{x-8}$

$\underset{x8}{lim}\frac{n}{x-8}$;$n=$

$$

Factor to complete step $1$ of finding the limit$.$ Use the math editor to enter your answer.

$\underset{x-4}{lim}\frac{x^2-2x-24}{x+4}$

$\underset{x-4}{lim}\frac{n}{x+4}$;$n=\sqrt[\phantom{2}]{v}$

Factor to complete step $1$ of finding the limit$.$ Use the math editor to enter your answer.

$\underset{x-7}{lim}\frac{x^2+x-42}{x+7}$

$\underset{x-7}{lim}\frac{n}{x+7}$;$n=$

$$