Question

можно полное решение?

Answer 1

$displaystyle frac{x^2-9}{3x-9}= frac{(x+3)(x-3)}{3(x-3)} = frac{x+3}{3} =1 frac{x}{3}$

Answer 2

x^2 - 9 / 3x - 9 =

(x+3)(x-3) / x (x-3) =

(x+3) / x