Question

Cсократить дробь
$a+2 \ a² - 7a - 18$

Answer 1

$frac{a+2}{a^2-7a-18}= frac{a+2}{(a+2)(a-9)}= frac{1}{a-9}$

Answer 2

(a+2)/(a-7a-18)=(a+2)/(a+2)(a-9)=1/(a-9)